00323nam a2200109Ia 4500008004100000040003800041100001900079245002800098260004100126300001800167653002800185211217s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aKallen, Gunnar 0aQuantum electrodynamics  bGeorge Allen and UnwinaLondonc1972  axviii,233p p.  aQuantum electrodynamics