TY  - BOOK
AU  - Gupta, P K
TI  - Methods in environmental analyses water soil and air /   
SN  - 9788177543087
U1  - 333.7 GUP 
PY  - 2018///
CY  - Jodhpur, India
PB  - Sinauer Associates
KW  - Biology
N1  - Includes references
ER  -