00824nam a2200253 4500 301432 BD-DhUL 20170412144142.0 721212s1972 nyu 000 0 eng 72171028 DLC DLC BD-DhUL HC79.E5 P335 335 UNF Palmstierna, Hans, 1926- The future imperative for the human environment / H. Palmstierna. New York : United Nations, 1972. 24 p. ; 26 cm. At head of title: United Nations Centre for Social and Economic Information. Environmental policy. Population. United Nations. Centre for Economic and Social Information. 7 cbc orignew 3 ncip 19 y-gencatlg ddc REF 178447 178447 0 0 ddc 0 335_000000000000000_UNF 1 REF 314989 DUL DUL UNC 2017-04-12 Gift 335 UNF D5670 2017-04-12 2017-04-12 REF