TY  - BOOK
AU  - Khurmi, R . S , Gupta, J.K
TI  - A text book of refrigeration and air conditioning , si units
SN  - 81-219-1687-9
U1  - 621.56 KHU 
PY  - 2005///
CY  - NEW DELHI
KW  - REFRIGERATION AND AIR CONDITIONING
ER  -