The USSR olympiad problem book; selected problems and theorems of elementary mathematics [by] D. O. Shklarsky, N. N. Chentzov [and] I. M. Yaglom. Rev. and edited by Irving Sussman. Translated by John Maykovich. Izbrannye zadachi i teoremy ėlementarnoĭ matematiki, ch. 1. English Shkli︠a︡rskiĭ, D. O. (David Oskarovich), 1918-1942. Mathematics Problems, exercises, etc. QA43 .S5823 510 19 SHU Translation of Izbrannye zadachi i teoremy ėlementarnoĭ matematiki, ch. 1. San Francisco, Freeman [1962] [1962] 1962 Text 452 p. eng engrus A Series of undergraduate books in mathematics