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...

Whakaahuatanga katoa

Ngā taipitopito rārangi puna kōrero
Ngā kaituhi rangatōpū: National Geographic Society (Washington, D.C.), WQED (Television station : Pittsburg, Pa.)
Ētahi atu kaituhi: Seamans, Joe
Hōputu: Visual Material
Reo:Ingarihi
I whakaputaina: Washington, D.C. The Society c1991.
Ngā marau: