00538nam a2200157Ia 450000500170000000800410001702000180005804100080007608200150008410000220009924500810012126000470020230000180024965000920026770000210035920191106150546.0190710s9999    xx            000 0 und d  a0 470 15066 1  aeng  a151.2 C81A  aCronbach, Lee J.  0aAptitudes and instructional methodsb: a handbook for research on interction  aNew Yorkb:Invington Publisher Inc.,c1977  axviii, 574p.   aPsychology a| Educational tests and measurement a| Teaching a| Statistical analysis   aSnow, Richard E