Great lakes, fragile seas [videorecording]

North America's freshwater seas have been subjected to decades of human abuse. Documents concurred groups attempting to repair past damage and confronting new threats to these waters. Shows how bodies of water affect lives of people. Shows the multifaceted aspects of the seas and other bodies o...

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書目詳細資料

Corporate Authors:	National Geographic Society (Washington, D.C.), WQED (Television station : Pittsburg, Pa.)
其他作者:	Seamans, Joe
Resource Type:	Visual Material
語言:	English
出版:	Washington, D.C. The Society c1991.
主題:	Great Lakes > Conservation of Environmental protection. Conservation of natural resources > Citizen participation. Conservation of natural resources.