TY  - BOOK
AU  - Parr, E. A.,
TI  - Hydraulics and pneumatics: :a technician's and engineer's guide
SN  - 9780750644199
PY  - 1991///
CY  - New Delhi
PB  - Butterworth-Heinemann 
UR  - http://opac.dbit.in/cgi-bin/koha/opac-retrieve-file.pl?id=e6867ec004f57a17da9979fd0c71e747
ER  -