• 1 Wisconsin's Water Library

• 5 Videos, Slides, Films

• 4 DVDs

• 3 Ecology
• 3 Pollution
• 3 Water
• 2 Agricultural pollution
• 2 Cities and towns
• 2 Environmental aspects
• 2 Factory and trade waste
• 2 Growth
• 2 Law and legislation
• 2 Marine pollution
• 2 Physiological effect
• 1 Amphibians
• 1 Community Participation
• 1 Conservation
• 1 Conservation of Natural Resources
• 1 Contamination
• 1 Drinking water
• 1 Endangered species
• 1 Environmental conditions
• 1 Environmental policy
• 1 Food-Processing Industry
• 1 Frogs
• 1 Industrial Waste
• 1 Lead content
• 1 Pruitt, Scott, 1968-

• 2 Hedrick Smith Productions
• 2 WGBH (Television station : Boston, Mass.)
• 2 WGBH Educational Foundation
• 1 Argo, Allison
• 1 ArgoFilms
• 1 BlueSpark Collaborative
• 1 Bourg, Anya
• 1 Jacoby, James (Television producer)
• 1 Jain, Aruna
• 1 Kaufman, Fred
• 1 Koughan, Frank
• 1 Left/Right (Firm)
• 1 Morton, Joe, 1947-
• 1 Murphy, Bill (Producer)
• 1 PBS Distribution (Firm)
• 1 PBS Home Video
• 1 Phillips, Tom, 1952-
• 1 Shaffer, Marc
• 1 Smith, Hedrick
• 1 Smith, Llewellyn
• 1 Thirteen Productions
• 1 Thomson, Kelly
• 1 Vargas, Kevin
• 1 WNET.ORG

• 5 English

• 3 United States
• 2 Atlantic Ocean
• 2 Chesapeake Bay
• 2 Chesapeake Bay (Md. and Va.)
• 2 Pacific Ocean
• 2 Puget Sound
• 2 Puget Sound (Wash.)
• 1 Flint
• 1 Maryland
• 1 Michigan
• 1 Panama
• 1 Virginia
• 1 Washington
• 1 Washington (State)

Limit year range