TY  - GEN
AU  - Lyons,Jerry L.
AU  - Askland,Carl L.(jtauth)
TI  - Lyons' encyclopedia of valves 
SN  - 0442249616
U1  - 621.84 
PY  - 1975///
CY  - New York
PB  - Van Nostrand Reinhold Company
KW  - Valves-Handbooks, manuals,etc
N1  - HB
ER  -