TY  - BOOK
AU  - Ahmad Yusuf J
AU  -  KASSAS Mohamed
TI  - Desertification :  Financial support for the biosphere   
T2  - United Nations Environment Programme
U1  - U214:(X:6), M7 
PY  - 1987///
CY  - London
PB  - Hodder and Stoughton UK       
KW  - Physical Geography
ER  -