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1947, x, 120
Book
AIP Conference Proceedings, ISSN 0094-243X, 04/2019, Volume 2089, Issue 1
This paper is devoted to the questions about the difference between mineral and synthetic vacuum oils, determining how often should the oil in the vacuum pump... 
Vacuum pumps
Journal Article
1959, Schriftenreihe des II. Physikalischen Instituts der Martin-Luther-Universität Halle-Wittenberg., 1000
Book
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