00464nam a2200145Ia 4500 250416b |||||||| |||| 00| 0 eng d 511.6 V699.CM Vilenkin, N. 7226 Combinatorial mathematics for recreation / Moscow: MIR Publication, 1972 207p. Index "Tr. from the Russian by George Yankovsky". Yankovsky, George ; tr. translator. 7227 ddc BK 0 0 0 511_600000000000000_V699_CM 0 GR 11342 ISI ISI 1998-09-08 0 511.6 V699.CM G1317 2019-02-14 00:00:00 BK 9190 9190