00624cam a2200157   4500020001500000040000800015082002600023100001900049245006500068250001400133260003000147300002400177500022500201650001900426700002100445  a0393063917  cDLC00a301 NOR 1972 A012 Or.1 aWard, Barbara,10aOnly one earth;bthe care and maintenance of a small planet,  a[1st ed.]  aNew York,bNortonc[1972]  axxv, 225 p.c21 cm.  a"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." 0aHuman ecology.1 aDubos, René J.