TY  - GEN
AU  - Witt,Sylvia and Witt David
TI  - Environmental science
SN  - 1779031378
AV  - GE  105 WIT 2000 
PY  - 1997///
CY  - Harare
PB  - Longman
KW  - environmental science
N1  - includes index
ER  -