Vydania od Erich Christian Wittmann

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Cover for Erich Christian Wittmann · Design Science and Its Importance in the German Mathematics Educational Discussion (Paperback Book) (2020)
Paperback Book
Design Science and Its Importanc...
Erich Christian Wittmann
Cover for Erich Christian Wittmann · Design Science and Its Importance in the German Mathematics Educational Discussion (Hardcover Book) (2020)
Hardcover Book
Design Science and Its Importanc...
Erich Christian Wittmann