01707nam a2200457Ia 4500 0000013121 20251012174525.0 720512s1972 caua b 001 0 eng 0071676953 0716706954 9780071676953 9780716706953 0071676954 HB871 .E35 1972 HB 875 E33pa 1972 301.3 Population, resources, environment; issues in human ecology [by] Paul R. Ehrlich [and] Anne H. Ehrlich. 2d ed. San Francisco, W.H. Freeman [1972] xiv, 509 p illus 27 cm. Third ed. published in 1977 under title: Ecoscience. Includes bibliographical references. The crisis -- Numbers of people -- Population structure and projection -- The limits of the earth -- Food production -- Environmental threats to man -- Ecosystems in jeopardy -- Optimum population and human biology -- Birth control -- Family planning and population control -- Social, political, and economic changes -- The international scene -- Conclusions. Human ecology. Pollution. Population. Ecology. Population Growth. Contaminaciâon. Ecologâia humana. âEcologie humaine. Pollution. Population. âEcologie humaine. ram Pollution. ram Population. ram Bevèolkerungswachstum. swd Umweltkrise. swd Bevolkingsvraagstuk. gtt Ecologische aspecten. gtt 5321 5321