The population of Costa Rica and its natural resources.

Mode of access: Internet.

Public administration of Florida's natural resources,

Mode of access: Internet.

H.R. 4502 and S. 1966, the Biotechnology Competitiveness Act [microform] : hearing before the Subcommittee on Natural Resources, Agriculture Research, and Environment and the Subcommittee on Science, Research, and Technology of the Committee on Science, Space, and Technology, House of Representatives, One Hundredth Congress, second session, July 14, 1988.

"No. 138."

The National Biological Diversity Conservation and Environmental Research Act [microform] : hearings before the Subcommittee on Natural Resources, Agriculture Research, and Environment of the Committee on Science, Space, and Technology, U.S. House of Representatives, One Hundredth Congress, second session, June 9, 30, 1988.

"No. 143."

National Acid Precipitation Assessment Program [microform] : hearing before the Subcommittee on Natural Resources, Agriculture Research, and Environment of the Committee on Science, Space, and Technology, U.S. House of Representatives, One Hundredth Congress, second session, April 27, 1988.

"No. 125."

H.R. 5000--recyclable materials [microform] : plastics in the environment : hearing before the Subcommittee on Natural Resources, Agriculture Research, and Environment of the Committee on Science, Space, and Technology, U.S. House of Representatives, One Hundredth Congress, second session, August 10, 1988.

"No. 132."

Technologies for remediating global warming [microform] : hearing before the Subcommittee on Natural Resources, Agriculture Research and Environment and the Subcommittee on Science, Research and Technology of the Committee on Science, Space, and Technology, U.S. House of Representatives, One Hundredth Congress, second session, June 29, 1988

Distributed to some depository libraries in microfiche. "No. 137."

A program to strengthen the scientific foundation in natural resources; a supplemental report to accompany hearings on H.R. 6257 and H.R. 6900, Public Lands Committee, House of Representatives, United States Congress

Part of illustrative matter in pocket.

Fate of zinc in natural surface waters ; final report /

"Supported by Division of Biology and Medicine, U.S. Atomic Energy Commission, research contract AT (11-1) 1264."

Technical report : Illinois natural areas inventory /

"Performed under contract to the Illinois Department of Conservation."

Natural resources : a summary report to the President of the United States /

Mode of access: Internet.

Bulletin - Illinois Natural History Survey.

Chemical abstracts

Report of the Committee on Natural Resources on its study of the spruce budworm problem in Maine.

Mode of access: Internet.

History of the Dept. of Home Economics at the University of Illinois 1900-1921.

"This copy is a Zerox photographic representation from the carbon copy of Miss Bevier's request."

Soils of the north central region of the United States. : Agricultural Experiment Stations of Illinois [and others] and the U. S. Dept. of Agriculture, cooperating.

Bibliography: p. 189-192