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@article{10_14708_dm_v10i01_6869, author = {. Redakcja}, title = {Caleb {Gattegno} 1911-1988}, journal = {Didactica Mathematicae}, pages = { 148}, publisher = {mathdoc}, volume = {10}, number = {01}, year = {1989}, doi = {10.14708/dm.v10i01.6869}, language = {pl}, url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v10i01.6869/} }
. Redakcja. Caleb Gattegno 1911-1988. Didactica Mathematicae, Tome 10 (1989) no. 01, p. 148. doi : 10.14708/dm.v10i01.6869. http://geodesic.mathdoc.fr/articles/10.14708/dm.v10i01.6869/
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