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1. Topics in operator theory by Beals, Richard Publication: Chicago; London University of Chicago Press 1971 . x,130p. 21cm. (pbk) Date: 1971 Availability: Items available: School of Theoretical Physics John T. Lewis Special Collection (Room 306) [515.8 BEA] (1),
2. Calculus on Heisenberg manifolds . by Beals, Richard Publication: Princeton Princeton Univ.Press 1988 Date: 1988 Availability: Items available: School of Theoretical Physics Library [515.73 BEA] (1),