Scientific Information Resource Centre, NCRA-TIFR

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1. Thermionic valves, by Beck, A. H. W. Publication: Cambridge [Eng.] University Press, 1953 . 570 p. 22 cm. Date: 1953 Availability: Items available: National Centre for Radio Astrophysics General Stacks [621.385/BEC] (1),
2. Velocity-modulated thermionic tubes ... by Beck, A. H. W. Publication: Cambridge [Eng.] University Press, 1948 . x, 180 p. : 22 cm. Date: 1948 Availability: Items available: National Centre for Radio Astrophysics General Stacks [621.385.6/BEC] (1),