00298nam a2200109Ia 4500008004100000082001800041100002100059245003600080260004000116630001800156650001400174211109s9999||||xx |||||||||||||| ||und||  a530.15bJEF-M  aJeffreys, Harold 0aMethods of Mathematical Physics  bPrincipal SBCaChanganacherryc1966  xGENERAL STACK  vGeneralia