TY  - BOOK
AU  - Tolba,Mostafa Kamal
AU  - Lamb,Robert
AU  - Allen,Patrick
ED  - United Nations Environment Programme
TI  - Earth matters
SN  - 9280710745
U1  - 333.72 
PY  - 1983///.
CY  - Nairobi: 
PB  - United Nations Environment Programme, 
KW  - Environmental protection
N1  - Includes index
ER  -