TY  - BOOK
AU  - Balraj Bhatia
AU  -  G.S. Chhina  Baldev Singh
TI  - Selected topics in environmental biology
U1  - 613.1 
CY  - New Delhi
PB  - Interprint PPublications
N1  - Balraj Bhatia; G.S. Chhina & Baldev Singh: Selected topics in environmental biology.  New Delhi.  Interprint PPublications,--(613.1BHA)
ER  -