01360nam a2200301Ia 4500 16640 BIBL 20160527184102.0 720904s1971 nyua b 10000 eng 72191103 EVLG 333.72 E19p c1 TD5 .E2 1971 333.7/2/094 333.72 E19p ECE Symposium on Problems Relating to Environment Prague 1971. ECE Symposium on Problems Relating to Environment Prague 1971. Local 89814 ECE Symposium on Problems Relating to Environment Prague 1971. Proceedings and documentation of the symposium organized by the United Nations Economic Commission for Europe and held from 2 to 15 May 1971 in Prague (Czechoslovakia) with a study tour to the region of Ostrava (Czechoslovakia) and Katowice (Poland). New York United Nations 1971. vii, 386 p. illus. 29 cm. 6.50 [United Nations. Document] ST/ECE/ENV/1 "United Nations publication. Sales number: E.71.II.E.6." Includes bibliographical references. Environmental engineering Congresses. Local 92386 Environmental policy Congresses. Local 92411 United Nations. Economic Commission for Europe. Local 182896 12196 12196 0 0 0 333_720000000000000_E19P 0 evl 45827 10 10 1 2016-05-27 23487 0 333.72 E19p 80000000439797 2016-05-27 00:00:00 r:16640 z:NCC:D 6