TY  - BOOK
AU  - Tolba,Mostafa Kamal
AU  - 
TI  - The World environment 1972-1992: two decades of challenge 
SN  - 0412469901
AV  - HC79.E5 W6682 1992
PY  - 1992///
CY  - London, New York
PB  - Published by Chapman & Hall on behalf of the United Nations Environment Programme
KW  - Environmental policy
KW  - Environmental protection
ER  -