TY  - BOOK
AU  - Elonka, Stephen Michael  .
AU  - Quaid,Walton  .
TI  - Standard refrigeration and air conditioning : Questions and answers / 
SN  - 0-07-099283-5
U1  - 697.93 
PY  - 1996///
CY  - New Delhi : 
PB  - Tata Mc-Graw Hill Publishing Company , 
ER  -