LOGICA - Manual pentru Clasa a IX -a - Petre Bieltz - 1995, 123 p., Clasa 9, Alte materii, Manuale | Okazii.ro
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Set logica - Manual si caiet de logica pentru clasa a IX-a - Autori - Elena Lupsa, Victor Bratu si Maria Dorina Stoica - LibrariileOnline.Ro
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