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| 050 | 1 | 4 | _aQ11 |
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| 210 | 1 | _aNSTA rep. | |
| 222 | 0 | 0 | _aNSTA reports |
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| 246 | 1 | 3 | _aNational Science Teachers Association reports |
| 264 | 1 |
_aWashington, D.C. : _bNational Science Teachers Association, _c?990- |
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| 336 |
_atexto _2rdacontent |
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| 337 |
_asin medio _2rdamedia |
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| 338 |
_avolumen _2rdacarrier |
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| 581 | _aLugar de publicacion varia: Arlington, Va. | ||
| 610 | 2 | 4 |
_aNational Science Teachers Association _vPublicaciones periodicas |
| 650 | 4 |
_aCiencia _xEstudio y enseñanza. |
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| 710 | 2 | 1 | _aNational Science Teachers Association |
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_c46636 _d46636 |
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