00305nam a2200109Ia 4500008004000000082001600040100002000056245004400076260003300120300000800153650003400161210210b1976   xxu||||| |||| 00| 0 eng d  a530.02 GINK  aGINZBURG (V L).  aKey problems of physics & astrophysics.  aMoscowbMir Publishersc1976  a148  aProblems physics astrophysics