| 000 | 00490nam a2200181Ia 4500 | ||
|---|---|---|---|
| 999 |
_c29040 _d29040 |
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| 005 | 20211228144930.0 | ||
| 008 | 180712s9999 xx 000 0 und d | ||
| 020 | _a9231026658 | ||
| 041 | _aEN | ||
| 082 |
_a507 _bUNE _223 |
||
| 100 | _aUNESCO | ||
| 245 | _aNew trends in integrated science teaching | ||
| 260 |
_aParis _bUnited Nations Educational, Scientific And Cultural _c1990 |
||
| 300 | _a(v.vi-238 p.) | ||
| 500 | _aIncludes bibliography and index. | ||
| 509 | _aNS | ||
| 942 | _cS | ||