00305nam a2200121Ia 4500008004100000041001200041082001600053100001400069245005500083260002500138300000800163650001200171221030s9999    xx            000 0 und d  aEnglish  a105.23bHar  aC. Harper 0aIntroduction to Mathematical Physicscby C. Harper  bPHIaNew Delhic1989  a301  aPhysics