• 3 College Library
• 3 Verona Shelving Facility
• 2 Wisconsin's Water Library
• 1 Ebling Library
• 1 MERIT Library
• 1 Steenbock Library

• 10 Videos, Slides, Films
• 1 Sound Recordings

• 1 Compact Discs

• 2 Biological control
• 2 Biologists
• 2 Carson, Rachel, 1907-1964
• 2 Ecology
• 2 Environmental health
• 2 Environmentalists
• 2 Fossil fuels
• 2 Global warming
• 2 Insect pests
• 2 Pesticides
• 2 Pesticides and wildlife
• 2 Science writers
• 2 Silent spring
• 2 Toxicology
• 2 adverse effects
• 1 Abnormalities
• 1 Agricultural biotechnology
• 1 Agricultural chemicals industry
• 1 Agricultural pollution
• 1 Automobiles
• 1 Biographical television programs
• 1 Boys
• 1 Cities and towns
• 1 Citizen participation

• 3 WGBH Educational Foundation
• 2 Canadian Broadcasting Corporation
• 2 Chadwick, Alex, 1947-
• 2 Films for the Humanities & Sciences (Firm)
• 2 Goodwin, Neil
• 2 Peace River Films
• 2 Streep, Meryl
• 2 WGBH Video (Firm)
• 2 WNET (Television station : New York, N.Y.)
• 1 ARTE France
• 1 Allan, Dominic
• 1 Bakshi, Vibha
• 1 Baroff, Beverly
• 1 Bell, Dale, 1938-
• 1 Bolton, Rose
• 1 Brandt, Rick
• 1 British Broadcasting Corporation
• 1 Bullfrog Films
• 1 Burgess, Paul
• 1 Chalufour, Michel
• 1 Cohen, David (British and South African journalist)
• 1 Cran, William
• 1 David, Laurie
• 1 De Guerre, Marc
• 1 De Leo, Maryann

• 9 English
• 1 Chinese
• 1 Spanish

• 5 United States
• 1 Africa, West
• 1 Alaska
• 1 Atlantic Ocean
• 1 Canada
• 1 Caucasus
• 1 Chesapeake Bay
• 1 Chesapeake Bay (Md. and Va.)
• 1 Chicago
• 1 Ecuador
• 1 Illinois
• 1 Maryland
• 1 Pacific Ocean
• 1 Puget Sound
• 1 Puget Sound (Wash.)
• 1 Taiwan
• 1 Virginia
• 1 Washington
• 1 Washington (State)

Limit year range