TY  - BOOK
AU  - Parr, Andrew.
TI  - Hydraulics and Pneumatics: A Technicians and Engineers Guide 
SN  - 9788172241896
U1  - 621.51 
PY  - 2005///
CY  - Delhi
PB  - Jaico Publishing House, 
KW  - Control Valves
KW  - Actuators
N1  - Index
ER  -