TY  - BOOK
ED  - Di Nicola Infinam 
TI  - Butterfly valve : : manual of installation, use and maintenance
U1  - 621.867 23
PY  - 1900///]
CY  - [S.I.]
PB  - Di Nicola
KW  - Butterfly valves
KW  - Βαλβίδες πεταλούδας
N1  - Also available in digital form
ER  -