000 | 00458 a2200145 4500 | ||
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001 | 9720 | ||
010 | _a907334638X | ||
090 | _a9720 | ||
100 | _a20170516 frey50 | ||
101 | _aeng | ||
102 | _aNL | ||
200 |
_aA probleme Posing approach to teaching an initial particle model _fby Maria johanna Vollebregt |
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210 |
_aUtrecht _cCentre for science and Mathematics Education _d1999 |
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215 |
_a201p. _d25cm. |
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225 |
_acdB series on research in science education _v |
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099 | _tTHE |