00345nam a2200121Ia 4500008004100000040002500041082001200066100002500078245005000103250002000153260004200173300000800215230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a378 G86  aGregorio, Herman C.  0aPrinciples and practices of college teaching   aRevised Edition  bR. P. Garcia Publishing Companyc1968  a289