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1by Freudenthal Hans
Gauthier-Villars 1958Book -
2by Freudenthal Hans
Elsevier 1965Book -
3by Freudenthal Hans
European Mathematical Society cop. 2009Book -
4Book
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5by Freudenthal Hans, The concept and the role of the model in mathematics and natural and social sciences
D. Reidel Publishing Company C 1961Book -
6by Adda Josette
Régionale parisienne de l'Association des professeurs de mathématiques de l'enseignement public 1975Book -
7by Brouwer Luitzen Egbertus Jan
North-Holland Publishing Company 1976Book