TY  - GEN
AU  - Dhaliwal, G.S.
AU  - Kukal,S.S.
TI  - Essentials of environmental science
SN  - 9788127224723 (pbk.)
AV  - GE5 .A28 1997
U1  - 628 
PY  - 2016///
CY  - New Delhi
PB  - Kalyani Publishers
KW  - Environmental sciences
N1  - Includes bibliographical references and index.
ER  -