Guthrie, A. . Vacuum Equipments and Techniques / Textual Documents A.Guthrie & R.K.Wakerling. - 1st ed. / - New York : McGraw - Hill book company , C1949. - xiii,263p. : ill ; 24cm . Index Subjects--Index Terms: Vacuum Equipments Atomic Energy G-Physics Dewey Class. No.: 539.7 / G 984 V