| 000 | 00353nam a2200121Ia 4500 | ||
|---|---|---|---|
| 100 | _aHead, John. Ed. Dell, Helen Devis | ||
| 942 | _cBK | ||
| 245 | _aIndividualizing instruction: Materials and classroom procedures. | ||
| 260 |
_aChicago _bScience Research Association, Inc _c1971 |
||
| 082 |
_a371.394 _bDel |
||
| 300 | _a(4),282,(2) | ||
| 546 | _aEnglish | ||
| 999 |
_c330008 _d330008 |
||
| 041 | _aeng | ||