TY  - BOOK
AU  - HAZRA , B
AU  - CHAKRAVARTY , D N
TI  - Refrigeration And Air -Conditioning
U1  - D6,8(mc421) 
PY  - 2012///
CY  - New Delhi
PB  - Dhanpat Rai Publishing
KW  -  REFRIGERATION AND AIR -CONDITIONING
KW  - ENGINEERING ROELECTRONICS

COMMUNICATION
ER  -