Hans Ruegg

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Matem�tica activa para familias educadoras y escuelas alternativas: Pre-Matem�tica 4 a 6 a�os: Volume 1
Ruegg, Hans

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Matem�tica Divina
Ruegg, Hans

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Matem�tica Activa para familias educadoras y escuelas alternativas: Primaria II (9 a 12 a�os) Parte B: Volume 5
Ruegg, Hans

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Matem�tica activa para familias educadoras y escuelas alternativas: Libro de trabajo Primaria I (6 a 9 a�os): Volume 3
Ruegg, Hans

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Matem�tica Activa para familias educadoras y escuelas alternativas: Primaria II (9 a 12 a�os) Parte A (Aritm�tica): Volume 4
Ruegg, Hans

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Matem�tica activa para familias educadoras y escuelas alternativas: Primaria I (6 a 9 a�os): Volume 2
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Entdeckungsreisen ins Land der Zahlen: Herausforderung zum mathematischen Forschen - Ca. 4. bis 7.Schuljahr: Volume 1
R�egg, Hans

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Matem�tica Activa para familias educadoras y escuelas alternativas: Primaria II (9 a 12 a�os) Libro de trabajo: Volume 6
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