PakCat catalogue record Ecoscience population, resources, environment By Ehrlich, Paul R. Bibliographic details ISBN0716705672 PublisherW. H. Freeman Publication placeSan Francisco Publication year1977 LanguageEnglish Material typeBook Physical descriptionxv, 1051 p. Additional authorsEhrlich, Anne H. Holdren, John P. SubjectsPopulation., Pollution., Human ecology.