00538nam a2200205Ia 4500003000900000008004100009020001800050040001600068080001600084100001900100245005600119250001200175260003800187300001400225490001500239650002000254650001900274650001700293650002200310IN-BaIIA211028s9999    xx            000 0 eng d  a0-471-81242-0  cIIA Library  a533.5bO'HA  aO'Hanlon, J. F 2aA user's guide to vaccum technologycJ. F. O'Hanlon  a2nd ed.  aNew YorkbJohn Wiley & Sonsc1989  axv, 481p.  aXerox copy  aCryogenic pumps  aGas properties  aVaccum pumps  aVaccum technology