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Eckstein, Shulamith G.. (). The rate of acquisition of formal operational schemata in adolescence: a secondary analysis (No. 5. Vol. 29 May-1992). : Journal of research in science teaching.

Gaya Chicago

Eckstein, Shulamith G.. The rate of acquisition of formal operational schemata in adolescence: a secondary analysis. No. 5. Vol. 29 May-1992 : Journal of research in science teaching, . Index Artikel.

Gaya MLA

Eckstein, Shulamith G.. The rate of acquisition of formal operational schemata in adolescence: a secondary analysis. No. 5. Vol. 29 May-1992 : Journal of research in science teaching, . Index Artikel.

Gaya Turabian

Eckstein, Shulamith G.. The rate of acquisition of formal operational schemata in adolescence: a secondary analysis. No. 5. Vol. 29 May-1992 : Journal of research in science teaching, . Index Artikel.