TY  - GEN
AU  - Tolba, Mostafa Kamal.        
TI  - Sustainable development: constraints and opportunities 
SN  - 0408008776 :
U1  - 333.72 
PY  - 1987///
CY  - London, Boston
PB  - Butterworths
KW  - United Nations Environment Programme
KW  - Environmental protection
KW  - Environmental policy
N1  - Includes index
ER  -