TY - BOOK AU - Dubos, Rene AU - Ward, Barbara TI - 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.. SN - 0140216014 U1 - 333.7 WAR PY - 1972/// CY - Harmondsworth PB - Penguin Books KW - Human ecology KW - Environment - Conservation ER -