| 000 | 00333nam a2200109Ia 4500 | ||
|---|---|---|---|
| 008 | 220510s1969 xx 000 0 und d | ||
| 041 | _aeng | ||
| 082 |
_a370.7803 _bAERA |
||
| 100 |
_aEbel,Robert L, _9777565 |
||
| 245 | _aEncyclopedia of Educational Research | ||
| 260 |
_aLondon: _bThe Macmiilan Company Collier Macmillan Limited, _c1969 |
||
| 999 |
_c527774 _d527774 |
||