TY  - BOOK
AU  - Northcroft,Lionel George[from old catalog]
TI  - Steam trapping and air venting,
U1  - 621.19 
PY  - 1946///
CY  - Brooklyn, N.Y.
PB  - Chemical publishing co., inc.
KW  - Steam-traps
KW  - MCE
ER  -