Safety Film Carrier Carrier No: 24266-6-1 Item Id: 92326 Rack No: 6283 Notes: Description: "Shows a biology class as it tests for pollution and investigates conditions in healthy creek environment and in a failing creek environment. Discusses the misuse of creeks, methods of improving creek environments, how to organize an environmental action group, and whom to contact for community action." -WorldCat | Conditions x2
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