TY  - BOOK
ED  - United Nations. Economic Commission for Europe
TI  - ECE symposium on problem relating to environment: proceedings and documentation of the symposium
U1  - 614.7 21st
PY  - 1971///
CY  - New York
PB  - Economic Commission for Europe
KW  - Ecology; United Nations-Economic conditions; Czechoslovakia-Economic conditions
N1  - Organised by United Nations Economic Commission for Europe and held from 2 to 15 May, 1971 in Prague (Czechoslovakia)with a study to us to the region of Ostrava (Czechoslovakia)and Katowice (Poland)
ER  -