TY  - BOOK
AU  - Kumar, Arvind 	
AU  - Prakash, M M
TI  - Environment and instrumentation /			
SN  - 9788170356097
U1  - 333.7 KUM 
PY  - 2009///
CY  - New Delhi : 
PB  - Daya Publishing House,	
N1  - Includes Index
ER  -