| 000 | 00662nam a2200109Ia 4500 | ||
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| 245 | _aThe reasoning ability of children of the fourth, fifth and sixth school grades. | ||
| 260 | _bColumbia University | ||
| 650 |
_aPsychology _921564 |
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| 856 | _uhttp://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqm&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&genre=journal&req_dat=xri:pqil:pq_clntid=50681&svc_dat=xri:pqil:context=title&rft_dat=xri:pqd:PMID=2035169 | ||
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