000 00304nam a2200145Ia 4500
100 _aPerelman/ Ya
490 _v2
942 _cBK
654 _aEntertainment
245 _aPhysics for entertainment
260 _bMir Publishers
_aMoscow
_c1977
082 _a530
300 _a330
546 _aENGLISH
999 _c31799
_d31799