Piskunov, N. S. Differential and integral calculus, Vol. 1 [by] N. Piskunov. - Moscow, MIR Publishers, 1969. - 471 p. 23 cm. LCCN: 72491963 Subjects--Topical Terms: Differential calculus.Calculus, Integral. LC Class. No.: QA303 / .P58213 1969