00343nam a2200121Ia 4500008004100000040002500041082001500066100002200081245005000103250001800153260003900171300001100210230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a808.51 En6  aEhninger, Douglas 0aPrinciples and types of speech communication   aNinth Edition  bScott, Foresman and Company c1982  a446 p.