20 (1983)
: 20-I.U.C.N. Environmental Policy and Law Paper-1983
;
17 (1981)
: 17-I.U.C.N. Environmental Policy and Law Paper-1981
;
14 (1980)
: 14-I.U.C.N. Environmental Policy and Law Paper-1980
;
12 (1976)
: 12-I.U.C.N. Environmental Policy and Law Paper-1976
;
11 (1976)
: 11-I.U.C.N. Environmental Policy and Law Paper-1976
;
10 (1976)
: 10-I.U.C.N. Environmental Policy and Law Paper-1976
;
1 (1972)
: 1-I.U.C.N. Environmental Policy and Law Paper-1972
;
I.U.C.N. Environmental Policy and Law Paper / 1973 - 1976
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