00286nam a2200109 a 450000500170000002000140001708200170003110000180004824500700006626000220013630000180015820251203091818.0  a503009000  a530,bD, sav  aSavelyev, IV.  aPhysics: a general course Vol. I: mechanics and molecular physics  aMoscowbMIRc1989  a439P.c23 CM.