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This documentary explores a variety of projects undertaken by scientists at Environment Canada's Freshwater Institute in Winnipeg to study the processes that pollute or disrupt clean and balanced freshwater environments.
Serbest bırakmak: Jan 01, 1974
Çalışma süresi: 24 dakika
Dil: English
Stüdyo: ONF | NFB
Ülke: Canada
Oyuncular: Stanley Jackson