00470nam a2200157Ia 4500003000900000008004100009040001600050080001500066100001800081245010700099260003300206300001000239650002400249700001800273700002100291IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a530.1bGRE  aGrechko, L. G 0aProblems in theoretical physicscL. G. Grechko..[et.al]                                                 aMoscowbMIR Publishersc1977  a447p.  atheoretical physics  aSugakov, V. I  aTomasevich, O. F