00339nam a2200157Ia 4500008004100000020000900041035001000050082001600060100001800076245003200094250000600126260002700132300000800159500000800167650000600175210723s9999||||xx |||||||||||||| ||und||  aNULL  a25045  a530.15BIRO  aIrodov, I. E. 0aProblems In General Physics  a-  aMoscowbMir Publishers  a386  a156  a-