Only one earth : the care and maintenance of a small planet - Ward, Barbara; Dubos, Rene J. (Rene Jules), 1901- a a; United Nations Conference on the Human Environment (1972 : Stockholm, Sweden) (Norton : New York, 1972)
'An unofficial report commissioned by the Secretary-General of the United Nations Conference on the Human Environment, prepared with the assistance of a 152-member committee of corresponding consultants in 58 countries.'
Keywords: Human ecology