The Salt problem in irrigation agriculture : research at the United States Regional Salinity Laboratory.

Cover title.

Soil and water conservation research in the Northeastern States

Mode of access: Internet.

Regional agricultural research : a quarter century of achievement through cooperative endeavor, 1947-1972.

Mode of access: Internet.

Travelers' tips on bringing food, plant, and animal products into the United States.

Mode of access: Internet.

Uneven-aged silviculture and management in the United States : combined proceedings of two in service workshops held in Morgantown, West Virginia, July 15-17, 1975, and in Redding, California, October 19-21, 1976.

Also issued as General Technical Report WO-24.

Century of service: the first 100 years of the United States Department of Agriculture.

"Literature cited": p. 419-439.

Hydrologic data for experimental agricultural watersheds in the United States, 1980 /

Issued Jan. 1980.

Travelers' tips on bringing food, plant, and animal products into the United States.

Cover title.

Travelers' tips on bringing food, plant, and animal products into the United States.

Mode of access: Internet.

Travelers' tips on bringing food, plant, and animal products into the United States.

Cover title.

Service monographs of the United States government.

Includes bibliographies.

Industrial research laboratories of the United States, including consulting research laboratories.

Other slight variations in title.

Agricultural maps in the National Archives of the United States, ca. 1860-1930 /

Mode of access: Internet.

Oil shale technologies [microform] : hearings before the Subcommittee on Energy Research and Development of the Committee on Energy and Natural Resources, United States Senate, Ninety-fifth Congress, first session, on S. 419 ...

Reuse of record except for individual research requires license from Congressional Information Service, Inc.

Some mites of Yemen collected by the Medical Mission of the United States Naval Medical Research Unit No.3. / Charles D. Radford.

v.34:no.28(1954)