TY  - BOOK
AU  - Polunin Nicholas
ED  - International Conference on Environmental Future (3rd : 1987 : Edinburgh)
TI  - Maintenance of the biosphere: Proceeding   
T2  - Foundation foe Environmental Conservation
U1  - U:(G:55)p1,N87, M0 
PY  - 1990///
CY  - Edinburgh
PB  - University Press Edinburgh        
KW  - Geography- Environment
N1  - Bibliography chapterwise
ER  -