Differential calculus : Vol. 1 / Piskunov, N. Differential calculus. QA304 .A44 1840z 517.2 PID Includes Index. Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. Moscow : Mir, c1974. c1974. 1974 Text 471 p. : d Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002.