| 000 | 00366nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 170101s1950 xx 000 0 und d | ||
| 082 | _a507 H51M | ||
| 100 | _aHEISS, Elwood D | ||
| 245 | 0 | _aModern science teaching | |
| 260 |
_bN.Y. _c1950 |
||
| 300 | _a462p | ||
| 650 | _aSCIENCE -- STUDY AND TEACHING | ||
| 653 | _aSCIENCE -- STUDY AND TEACHING | ||
| 942 |
_2ddc _cB |
||
| 999 |
_c7565 _d7565 |
||