00271nam a2200097Ia 4500008004100000040002900041050002400070100001700094245002800111260003400139230104s9999||||xx |||||||||||||| ||und||  cChuka University Library  aLB 1051 bF71 1967   aFrandsen A.N 0aEducational  psychology  aMc Graw-HillbNew York c1967