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The United States Naval Observatory performs an essential scientific role for the United States, the Navy, and the Department of Defense. Its mission includes determining the positions and motions of the Earth, Sun, Moon, planets, stars and other celestial objects; providing astronomical data; determining precise time; measuring the Earth's rotation; and maintaining the Master Clock for the United States. Observatory astronomers formulate the theories and conduct the relevant research necessary to improve these mission goals. This astronomical and timing data, essential for accurate navigation and the support of communications on Earth and in Space, is vital to the Navy and Department of Defense. It is also used extensively by other agencies of the government, industry and the public at large.

The Observatory consists of four Scientific Departments: Astrometry, Astronomical Applications, Earth Orientation, and Time Service. Each Department is responsible for specific products and services tailored to their end-users within both the DoD and civilian worlds.

The Naval Observatory's Nautical Almanac Office computes and prepares the vital annual U.S. navigational publications, the Air Almanac and the Nautical Almanac. In addition, they carry on the essential research work of deriving improved values of the fundamental astronomical elements and embodying them in new tables of the celestial motions, publishing the Astronomical Phenomena and the Astronomical Almanac. These publications are produced in cooperation with Her Majesty's Nautical Almanac Office, United Kingdom Hydrographic Office.

To learn more about the U.S. Naval Observatory, visit their website.

The bound volumes of the United States Reports contain the fourth and final generation of the Supreme Court's opinions.

Caution: Only the printed bound volumes of the United States Reports contain the final, official opinions of the Supreme Court of the United States. In case of discrepancies between a bound volume and any other version of the same materials, whether print or electronic, official or unofficial--the printed bound volume controls in a court of law.

In this official collection, you will find several published bound volumes of the United States Statutes at Large. These volumes contain the evidence of law enacted by the specific session of the U.S. Congress.  Included are full-text of public laws, plus congressional resolutions and presidential proclamations within each Congressional session stated. Each volume also contains a broad array of topics as it applies to the specific Congressional member terms and official legislation. These volumes serve as official legal references of the U.S. Congress.

 

Explore these Government publications highlighting U.S. and military history. Military topics cover major wars and battles, as well as the history on all branches of the military. For anyone interested in America’s history, key publications cover information on American democracy, presidents, presidential elections, and other important topics.

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Minor Species Index File FDA Drug Folder (Purple Polyethylene)
Title:
Minor Species Index File FDA Drug Folder (Purple Polyethylene)\

Minor Species Index File FDA Drug Folder (Purple Polyethylene)

Decisions of the Federal Labor Relations Authority, V. 62, December 10, 2006 Through October 15, 2008 (Hardcover)
Title:
Decisions of the Federal Labor Relations Authority, V. 62, December 10, 2006 Through October 15, 2008 (Hardcover)

Decisions of the Federal Labor Relations Authority, V. 62, December 10, 2006 Through October 15, 2008 (Hardcover)

Preservation of Access to Care for Medicare Beneficiaries and Pension Relief Act Of 2010, Public Law 111-192
Title:
Preservation of Access to Care for Medicare Beneficiaries and Pension Relief Act Of 2010, Public Law 111-192

Preservation of Access to Care for Medicare Beneficiaries and Pension Relief Act Of 2010, Public Law 111-192

Examining the Filibuster: Hearings, April 22, 2010; May 19, 2010; June 23, 2010; July 28, 2010; and September 22 and 29, 2010
Title:
Examining the Filibuster: Hearings, April 22, 2010; May 19, 2010; June 23, 2010; July 28, 2010; and September 22 and 29, 2010

Examining the Filibuster: Hearings, April 22, 2010; May 19, 2010; June 23, 2010; July 28, 2010; and September 22 and 29, 2010

United States Code 2006 Edition, Supplement 3, Volume 3, Title 22, Foreign Relations and Intercourse to Title 42, The Public Health and Welfare, Sections 1-5792a
Title:
United States Code 2006 Edition, Supplement 3, Volume 3, Title 22, Foreign Relations and Intercourse to Title 42, The Public Health and Welfare, Sections 1-5792a

United States Code 2006 Edition, Supplement 3, Volume 3, Title 22, Foreign Relations and Intercourse to Title 42, The Public Health and Welfare, Sections 1-5792a

Federal Register, V. 75, No. 228, Monday, November 29, 2010, Medicare Program: Payment Policies Under the Physician Fee Schedule and Other Revisions to Part B for CY 2011
Title:
Federal Register, V. 75, No. 228, Monday, November 29, 2010, Medicare Program: Payment Policies Under the Physician Fee Schedule and Other Revisions to Part B for CY 2011

Federal Register, V. 75, No. 228, Monday, November 29, 2010, Medicare Program: Payment Policies Under the Physician Fee Schedule and Other Revisions to Part B for CY 2011

Intelligence Authorization Act for Fiscal Year 2010, Public Law 111-259
Title:
Intelligence Authorization Act for Fiscal Year 2010, Public Law 111-259

Intelligence Authorization Act for Fiscal Year 2010, Public Law 111-259

Congressional Oversight Panel September Oversight Report: Assessing the TARP on the Eve of Its Expiration, September 16, 2010
Title:
Congressional Oversight Panel September Oversight Report: Assessing the TARP on the Eve of Its Expiration, September 16, 2010

Congressional Oversight Panel September Oversight Report: Assessing the TARP on the Eve of Its Expiration, September 16, 2010

Inquiry Into the Role and Oversight of Private Security Contractors in Afghanistan: Report, Together with Additional Views
Title:
Inquiry Into the Role and Oversight of Private Security Contractors in Afghanistan: Report, Together with Additional Views

Inquiry Into the Role and Oversight of Private Security Contractors in Afghanistan: Report, Together with Additional Views

Small Entity Compliance Guide to Renovate Right, EPA's Lead-Based Paint Renovation, Repair, and Painting Program
Title:
Small Entity Compliance Guide to Renovate Right, EPA's Lead-Based Paint Renovation, Repair, and Painting Program

Small Entity Compliance Guide to Renovate Right, EPA's Lead-Based Paint Renovation, Repair, and Painting Program

United States Code, Containing the General and Permanent Laws of the United States, in Force on January 8, 2008 (CD-ROM)
Title:
United States Code, Containing the General and Permanent Laws of the United States, in Force on January 8, 2008 (CD-ROM)

United States Code, Containing the General and Permanent Laws of the United States, in Force on January 8, 2008 (CD-ROM)

United States Code, Containing the General and Permanent Laws of the United States, in Force on January 3, 2007 (CD-ROM)
Title:
United States Code, Containing the General and Permanent Laws of the United States, in Force on January 3, 2007 (CD-ROM)

United States Code, Containing the General and Permanent Laws of the United States, in Force on January 3, 2007 (CD-ROM)

New Exterior Additions to Historic Buildings: Preservation Concerns
Title:
New Exterior Additions to Historic Buildings: Preservation Concerns

New Exterior Additions to Historic Buildings: Preservation Concerns

Edward M. Kennedy: Memorial Addresses and Other Tributes, 1932-2009 (Paperback)
Title:
Edward M. Kennedy: Memorial Addresses and Other Tributes, 1932-2009 (Paperback)

Edward M. Kennedy: Memorial Addresses and Other Tributes, 1932-2009 (Paperback)

United States Code, 2006 Edition, Supplement 3, V. 2, Title 12, Banks and Banking to Title 21, Food and Drugs
Title:
United States Code, 2006 Edition, Supplement 3, V. 2, Title 12, Banks and Banking to Title 21, Food and Drugs

United States Code, 2006 Edition, Supplement 3, V. 2, Title 12, Banks and Banking to Title 21, Food and Drugs

United States Reports, Volume 550, Cases Adjudged in the Supreme Court at October Term, 2006, April 17 Through May 29, 2007
Title:
United States Reports, Volume 550, Cases Adjudged in the Supreme Court at October Term, 2006, April 17 Through May 29, 2007

United States Reports, Volume 550, Cases Adjudged in the Supreme Court at October Term, 2006, April 17 Through May 29, 2007

Congressional Record, Volume 145, Pt. 22, Index, January 6, 1999 to December 3, 1999
Title:
Congressional Record, Volume 145, Pt. 22, Index, January 6, 1999 to December 3, 1999

Congressional Record, Volume 145, Pt. 22, Index, January 6, 1999 to December 3, 1999

Colombia: A Country Study
Title:
Colombia: A Country Study

Colombia: A Country Study

Description of Revenue Provisions Contained in the President's Fiscal Year 2011 Budget Proposal, August 16, 2010
Title:
Description of Revenue Provisions Contained in the President's Fiscal Year 2011 Budget Proposal, August 16, 2010

Description of Revenue Provisions Contained in the President's Fiscal Year 2011 Budget Proposal, August 16, 2010

Charlestown Navy Yard: Boston National Historical Park
Title:
Charlestown Navy Yard: Boston National Historical Park

Charlestown Navy Yard: Boston National Historical Park

United States Code, 2006 Edition, Supplement 3, V. 1, Title 1, General Provisions to Title 11, Bankruptcy, January 4, 2007 to February 1, 2010
Title:
United States Code, 2006 Edition, Supplement 3, V. 1, Title 1, General Provisions to Title 11, Bankruptcy, January 4, 2007 to February 1, 2010

United States Code, 2006 Edition, Supplement 3, V. 1, Title 1, General Provisions to Title 11, Bankruptcy, January 4, 2007 to February 1, 2010

Homemade Explosive Recognition Guide (Urdu Language Version)
Title:
Homemade Explosive Recognition Guide (Urdu Language Version)

Homemade Explosive Recognition Guide (Urdu Language Version)

United States Code, 2006 Edition, Supplement 2, V. 4, Title 43, Public Lands to Title 50, War and National Defense, Popular Names, Tables, and Index
Title:
United States Code, 2006 Edition, Supplement 2, V. 4, Title 43, Public Lands to Title 50, War and National Defense, Popular Names, Tables, and Index

United States Code, 2006 Edition, Supplement 2, V. 4, Title 43, Public Lands to Title 50, War and National Defense, Popular Names, Tables, and Index

United States Code, 2006 Edition, Supplement 2, V. 3. Title 28, Judiciary and Judicial Procedure to Title 42, The Public Health and Welfare
Title:
United States Code, 2006 Edition, Supplement 2, V. 3. Title 28, Judiciary and Judicial Procedure to Title 42, The Public Health and Welfare

United States Code, 2006 Edition, Supplement 2, V. 3. Title 28, Judiciary and Judicial Procedure to Title 42, The Public Health and Welfare

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