The New Encyclopędia BritannicaEncyclopędia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 601
... pollution of surface waters is concentrated principally on rivers and small lakes . With power requirements in modern societies increasing by about 7 percent per year , however , some apprehension has been expressed about the future ...
... pollution of surface waters is concentrated principally on rivers and small lakes . With power requirements in modern societies increasing by about 7 percent per year , however , some apprehension has been expressed about the future ...
Page 764
... pollution . Tanneries are generally located close to a river to ensure a plentiful water supply for processing and effluent disposal . Tannery effluent includes proteins , hair , salt , lime sludge , sulfides , acids , chrome and other ...
... pollution . Tanneries are generally located close to a river to ensure a plentiful water supply for processing and effluent disposal . Tannery effluent includes proteins , hair , salt , lime sludge , sulfides , acids , chrome and other ...
Page 892
... pollution problems suffered by other de- veloped areas . All of the principality's 10,400 acres of forest are protected in order to maintain the ecology of the mountain slopes and to guard against erosion . There is no heavy industry ...
... pollution problems suffered by other de- veloped areas . All of the principality's 10,400 acres of forest are protected in order to maintain the ecology of the mountain slopes and to guard against erosion . There is no heavy industry ...
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