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Algebra recreativa
  • PDF
  • Spanish
  • Year: 2001
  • Author: Perelman Ya.I.
Geometria recreativa
  • PDF
  • Spanish
  • Author: Perelman Ya.I.
Aritmetica recreativa
  • PDF
  • Spanish
  • Author: Perelman Ya.I.
Problemas y experimentos recreativos
  • PDF
  • Spanish
  • Author: Perelman Ya.I.
Fisica recreativa II
  • PDF
  • English
  • Author: Perelman Ya.I.
Fisica recreativa
  • PDF
  • Spanish
  • Author: Perelman Ya.I.
Astronomia recreativa
  • PDF
  • Spanish
  • Author: Perelman Ya.I.
Fun with maths and physics
  • DJVU
  • English
  • Year: 1984
  • Author: Perelman Ya.I.
Aritmetica distractiva - probleme curioase si ghicitori din lumea cifrelor
  • PDF
  • Romanian
  • Year: 1969
  • Author: I. I. Perelman
Algebra distractiva
  • PDF
  • Romanian
  • Year: 1961
  • Author: I. I. Perelman
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