00305nam a2200097Ia 4500008004100000040003800041100002300079245005400102260003500156300001600191211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aSchweber, Silvan S 0aIntroduction to relativistic quantum field theory  bHarper and RowaNew Yorkc1961  axiv,913p p.