TY  - BOOK
AU  - Porges John
TI  - Handbook Of Heating Ventilating And Air Conditioning With Re Ady Reference Tables And Data
SN  - 0 408 00233 6
AV  - REF TH 7225.P6 
PY  - 1976///
CY  - London
PB  - Newnes-Butterworths
ER  -