Man and His Environment: A View Toward Survival: Background BookU.S. Government Printing Office, 1970 - Human ecology |
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achieve action activities agencies agricultural air pollution American amount animals areas atmosphere BCDC become biological birds brown pelicans California carbon dioxide chemical cities citizens Commission compost concentrations conservation culture DDT compounds disposal earth ecological economic ecosystem effects efforts energy environment environmental problems environmental quality established ethics example existence Federal feedlot fish and wildlife future global goals governmental habitat human important incinerators increase increasingly industrial interest involved land living major man's marine materials mineral natural environment natural resources nitrogen nitrogen cycle ocean open space organic oxygen percent pesticides photosynthesis phytoplankton planning plants political polychlorinated biphenyls present production programs protection regional responsibility result San Francisco Bay scientific soil solid waste management species sulphur oxides survival teach-in transportation UNESCO United urban