The Environment of America: Present/ Future/ Past: Selected Articles from a Variety of Sources ...Thomas C. Jones J. G. Ferguson Publishing Company; distributed to the book trade by Doubleday [New York, 1971 - Conservation of natural resources - 324 pages |
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Page 55
... chemical energy in green plants represents the productivity of the land and vegeta- tion . The productivity of any area of land depends upon the chemical nutrients that are present in the soil and the ability of these to go into ...
... chemical energy in green plants represents the productivity of the land and vegeta- tion . The productivity of any area of land depends upon the chemical nutrients that are present in the soil and the ability of these to go into ...
Page 123
... chemical company salesmen with new products and techniques every year . Chemical marketing efforts are directed at the farmer , too , by every means of advertising from billboards to personal visits . " ( 28 ) Directed specifically at ...
... chemical company salesmen with new products and techniques every year . Chemical marketing efforts are directed at the farmer , too , by every means of advertising from billboards to personal visits . " ( 28 ) Directed specifically at ...
Page 130
... chemical use is explained . " He says " it is not enough to seek to educate growers and appliers in the proper methods of handling toxic chemicals . They must also be told the biological and social consequences of continuing chemical ...
... chemical use is explained . " He says " it is not enough to seek to educate growers and appliers in the proper methods of handling toxic chemicals . They must also be told the biological and social consequences of continuing chemical ...
Contents
America the Beautiful | 8 |
a Faithful Steward? | 25 |
An Environment Fit for People | 44 |
Copyright | |
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acres agencies agricultural air pollution alewives American animals areas become birds Bureau chemical cities coastal zone Commission conservation continue Creek crops dance earth ecological economic effects environment environmental farmers Federal feet fertility fish grouse growth human hundred hunter increase Indians industry insecticides insects INTERIOR killed Lake Michigan lake trout lamprey land lead leafhoppers lindane living major marine ment miles million minerals NATIONAL COAL ASSOCIATION National Forest NATIONAL PARK NATIONAL PARK SERVICE natural beauty ocean organisms percent pest pesticides pigeons planning plants POLLUTION CONTROL population prairie present problems production protection rainbow trout recommend recreation regions river scientists sea lamprey SOCIETY OF COLORADO soil species streams timber tion trees trout U.S. DEPT U.S. FOREST SERVICE United UPI COMPIX urban waste water pollution Whooping Crane wild wildlife woods