000 00309nam a2200109Ia 4500
008 231116s9999 xx 000 0 und d
020 _a787960519
090 _aHF 1106 COL 2003
100 0 _aRUTH COLVIN CLARK,RICHARD E. MAYER
245 0 0 _aE- LEARNING AND THE SCIENCE OF INSTRUCTION
260 _bJOHN WILEY & SONS
999 _c4317
_d4317