301.32
E33P
           Ehrlich, Paul R
               Population resources environment issues in human ecology \ Paul R Ehrlich - San Francisco : W H Freeman and Company, 1970.
               383p. - Series of books in biology/ed. by Donald Kennedy and Roderic B Park .
                ISBN: 0-7167-0680-6

74017
                Subjects: Population; Population-Environmental aspects; Human ecology.