Only one earth : the care and maintenance of a small planet : 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 - Ward, Barbara, 1914-; Dubos, Rene J. (Rene Jules), 1901; United Nations Conference on the Human Environment (1972 : Stockholm, Sweden) (Harmondsworth : Penguin, 1972)
Keywords: Human ecology