00342nam a2200145Ia 4500003000400000005001700004008004000021040000700061041000800068082001300076100002600089245003900115260003300154300000900187OSt20250729112203.0210210b1973   xxu||||| |||| 00| 0 eng d  cAL  aeng  a510 LIDP  aLidsky V A and others  aProblems in elementary mathematics  aMoscowbMir Publishersc1973  a376p