TY  - BOOK
AU  - Tolba,Mostafa Kamal
AU  - Lamb,Robert
AU  - Allen,Patrick
ED  - United Nations Environment Programme.
TI  - Earth matters
SN  - 9280710745 (pbk.)
AV  - TD170.3 .T652 1983
U1  - 333.72 19
PY  - 1983///
CY  - Nairobi, Kenya
PB  - United Nations Environment Programme
KW  - Environmental protection
ER  -