Is there an optimum level of populationn - Singer, S. Fred 1924- (Siegfried Fred).; American Association for the Advancement of Science (New York McGraw-Hill, 1971)
"A Population Council book."
"Outgrowth of a symposium held in Boston in December 1969 as part of the annual meeting of the American Association for the Advancement of Science."
Keywords: Population -- Addresses, essays, lectures