| 000 | 00432nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 170101s1967 xx 000 0 und d | ||
| 082 | _a371.255 T30C | ||
| 100 | _aTHELEN, Herbert A | ||
| 245 | 0 | _aClassroom grouping for teachability | |
| 260 |
_bN.Y. _c1967 |
||
| 300 | _a274p | ||
| 650 | _aABILITY GROUPING IN EDUCATION | ||
| 653 | _aABILITY GROUPING IN EDUCATION | ||
| 653 | _aTEACHER STUDENT RELATIONSHIPS | ||
| 942 |
_2ddc _cB |
||
| 999 |
_c36420 _d36420 |
||