000 00584nam a2200217Ia 4500
003 OSt
005 20220925232225.0
006 a|||||r|||| 00| 0
007 ta
008 220923b |||||||| |||| 00| 0 eng d
037 _cGeneral Book
040 _aRTL
_cRTL
_beng
041 _2eng
_aeng
082 _aB217, L2
100 _aVilenkin N
_9296962
245 0 _aCombinatorial mathematics for recreation. Rev ed.
260 _aMoscow
_bMir Publishers
_c1972
300 _a207P
_ccm.
942 _hB217, L2
_cGB
_2CC
999 _c590737
_d590737