.245
a	Process vacuum system design and operation/ by J.L Ryans; D.L Roper
h	Book
.020
a	ISBN 0 07 054355 0
.100
a	RYANS, J.L
.005
a	20071219080202
.260
a	New York
b	Mc Graw-hill
c	1986
.084
a	621.692 RYA
.300
a	xii, 356 hlm.: gamb.
b	25 cm.
c	xii, 356 hlm.: gamb.; 25 cm.
.336
a	Book