TY  - BOOK
AU  - Northcroft, L.G.
TI  - Steam trapping and air venting
U1  - 621.197 21st ed.
PY  - 1947///
CY  - London
PB  - Hutchinson’s Scientific and Technical Publications
KW  - Steam-traps
N1  - Index: pp 170-2
ER  -