Wetlands of the United States : current status and recent trends /

Mode of access: Internet.

Solar thermal technology.

Issued in parts.

Archives Library Information Center : archival and records information resources of the National Archives Library.

Mode of access: Internet.

Motion pictures & sound and video recordings in the National Archives.

Mode of access: Internet.

Administrative organization: a consideration of the principal executive departments of the United States government, in relation to administration.

Mode of access: Internet.

Classified driver licensing in the United States.

Mode of access: Internet.

Telstar I.

Cover title. "Published in accordance with the cooperative agreement executed on July 27, 1961, between the National Aeronautics and Space Administration and the American Telephone and Telegraph Company ... The report consists of four volumes. The first three arear issue of the Bell System technical journal. The fourt composed of papers originally published together as a regulh volume ... pertinent papers contributed by various authors."

Aviation weather for pilots and flight operations personnel /

"AC 00-6A."

American lawn tennis; the official bulletin of the United States National Lawn Tennis Association ...

Vol. 3- 1900- have title: Golf and lawn tennis.

Study of methods for increasing safety belt use : comments on the study by the U.S. Department of Transportation, National Highway Traffic Safety Administration /

April 1981.

Address by Under Secretary of the Interior, Clarence A. Davis, before the Chamber of Commerce of the United States, National Conference on Water Resources Policy, Chase-Park Plaza Hotel, St. Louis, Missouri, January 24, 1956.

Mode of access: Internet.

Summary of selected injury experience and worktime for the mining industry in the United States, 1931-77 /

Chiefly tables.

Flight Mechanics/Estimation Theory Symposium 1992 : proceedings of a symposium sponsored by NASA Goddard Space Flight Center and held at Goddard Space Flight Center, Greenbelt, Maryland, May 5-7, 1992 /

Includes bibliographical references.

Investigation of un-American propaganda activities in the United States : Hearings before a Special Committee on Un-American Activities, House of Representatives, Seventy-fifth Congress, third session-Seventy-eighth Congress, second session, on H. Res. 282, to investigate (1) the extent, character, and objects of un-American propaganda activities in the United States, (2) the diffusion within the United States of subversive and un-American propaganda that is instigated from foreign countries or of a domestic origin and attacks the principle of the form of government as guaranteed by our Constitution, and (3) all other questions in relation thereto that would aid Congress in any necessary remedial legislation.

Martin Dies, chairman.

New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s) Improved astrophysical parameters for the Geneva-Copenhagen Survey

We present a re-analysis of the Geneva-Copenhagen survey, which benefits from the infrared flux method to improve the accuracy of the derived stellar effective temperatures and uses the latter to build a consistent and improved metallicity scale. Metallicities are calibrated on high-resolution spectroscopy and checked against four open clusters and a moving group, showing excellent consistency. The new temperature and metallicity scales provide a better match to theoretical isochrones, which are used for a Bayesian analysis of stellar ages. With respect to previous analyses, our stars are on average 100 K hotter and 0.1 dex more metal rich, which shift the peak of the metallicity distribution function around the solar value. From Stromgren photometry we are able to derive for the first time a proxy for [alpha/Fe] abundances, which enables us to perform a tentative dissection of the chemical thin and thick disc. We find evidence for the latter being composed of an old, mildly but systematically alpha-enhanced population that extends to super solar metallicities, in agreement with spectroscopic studies. Our revision offers the largest existing kinematically unbiased sample of the solar neighbourhood that contains full information on kinematics, metallicities, and ages and thus provides better constraints on the physical processes relevant in the build-up of the Milky Way disc, enabling a better understanding of the Sun in a Galactic context.