| 000 | 00411nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 250428s9999 xx 000 0 und d | ||
| 082 | _aR 550.03 N21s 1963 | ||
| 245 | 0 | _aYoung people's science encyclopedia | |
| 245 | 0 | _cprepared in cooperation with the national college of education. | |
| 260 | _bChildrens Press; | ||
| 260 | _c1963 | ||
| 526 | _a500 Natural Sciences & Math | ||
| 942 | _2DDC | ||
| 942 | _cB | ||
| 999 |
_c24438 _d24438 |
||