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...

詳細記述

書誌詳細

共著者:	National Geographic Society (Washington, D.C.), WQED (Television station : Pittsburg, Pa.)
その他の著者:	Seamans, Joe
Resource Type:	Visual Material
言語:	English
出版事項:	Washington, D.C. The Society c1991.
主題:	Great Lakes > Conservation of Environmental protection. Conservation of natural resources > Citizen participation. Conservation of natural resources.