00000cam a22000004a 4500 UP-1685523046125144643 Buklod 20230503092606.0 m o j ta 991231s1972 xx r |||| u|eng|| 0716706954 (iLib)UPMNL-00000025486 HB871 E35 1972 Ehrlich, Paul R.. Population, resources, environment issues in human ecology [by] Paul R. Ehrlich [and] Anne H. Ehrlich. San Francisco W. H. Freeman 1972 xiv, 509 p. ill. 27 cm. Third ed. published in 1977 under title: Ecoscience. Includes bibliographies. Human ecology. Pollution. Population. Ehrlich, Anne H. H-9587 UPMNL CPH HB871 E35 1972 Book