00489nam a22001937a 4500 CEME 20210628210020.0 210210b xxu||||| |||| 00| 0 eng d 0-7503-0495-2 . 621.55 CHA Chamers, A Fitch, R. K Halliday, B. S 77840 Basic vacuum technology 2ND BRISTOL INSTITUTE OF PHYSICS 1998 189 VACUUM TECHNOLOGY 77841 BK ddc 583046 583046 0 0 0 0 CEME CEME GEN 2017-06-12 0 621.55 CHA CEME-33417 2021-06-28 2021-06-28 BK