3.118 كۆرۈنۈشلەر
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.
Release: Jan 01, 1974
Runtime: 24 مىنۇت
تىل: English
Studio: ONF | NFB
دۆلەت: Canada
Cast: Stanley Jackson
