TY  - BOOK
AU  - Porges, John
TI  - Handboook of heating ventilating and air conditioning: Useful tables and data arranged in a manner covenient for ready reference 
SN  - 040800052X
U1  - 697 
PY  - 1960///
CY  - London
PB  - Newnes
KW  - Ventilating, air conditioning
ER  -