> Mehrbändiges Werk
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2:
Proofs without words 2 More exercices in visual thinking Roger B. Nelsen
Washington, DC: The Mathematical Association of America, 2002
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2:
Proofs without words 2 More exercices in visual thinking Roger B. Nelsen
Washington, DC: The Mathematical Association of America, 2000
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1:
Proofs without words 1 Proofs without words : exercises in visual thinking / Roger B. Nelsen
Washington, DC: Mathematical Assoc. of America, 1993