The five republics of Central America; their political and economic development and their relations with the United States,

Reprint of the 1918 ed.

History of the United States of America from the discovery of the continent /

Mode of access: Internet.

Fourteenth census of the United States taken in the year 1920 ... [Reports]

At head of title: Department of commerce. Bureau of the census ... Sam. L. Rogers, director. Resigned April 13, 1921. W. M. Steuart, director. Appointed April 14, 1921.

Historical statistics of the United States, colonial times to 1957.

Bibliographical footnotes.

The NASA university space engineering research centers.

Mode of access: Internet.

Foreign commerce and navigation of the United States ...

The statistics of "Immigration and passenger movement" are included in the report on foreign commerce to 1895, and for 1893-1894 are also published separately.

Arbitration between the United States and Sweden under special agreement of December 17, 1930.

Parts 3 and 4, "Photographic reprint".

Economic system analysis of coal preconversion technology /

Prepared for Office of Coal Research, U.S. Department of the Interior.

Development of a process for producing an ashless, low-sulfur fuel from coal.

Prepared for the Office of Coal Research, Dept. of the Interior...by the Pittsburg & Midway Coal Mining Co., Kansas City, Mo.

A method for factoring the action of asynchronous circuits /

"Presented at the AIEE fall general meeting, Chicago, Illinois, October l1, 1960. This work was supported in part by the Office of Naval Research under contract Nonr-1834 (27)."

Formerly utilized MED/AEC sites remedial action program : radiological survey of the Building Site 421, United States Watertown Arsenel, Watertown, MA /

Feb. 1980.

Office of Environment statement of programs.

Report covers fiscal year.

Pollution of subsurface water by sanitary landfills : volume 1 /

"Volumes 2 and 3, which are compilations of the experimental data collected, will be available through the National Technical Information Service, Springfield, Virginia 22151."

Aerobic treatment of livestock wastes /

"Final report (SW-16rg)--on work performed by Purdue University under solid waste research grant no. EC-00244 and by the University of Illinois under solid waste research grant no. EC-00245."

Assessment of the need for noise control research on electric power transformers and reactors /

"DOE/EV-0095."