Author: Jan (University of Helsinki) von Plato Support2 Ebooks by Jan (University of Helsinki) von Plato Sara Negri & Jan von Plato: Proof Analysis … PDF English DRM €51.35 Jan von Plato: Elements of Logical Reasoning … PDF English DRM €29.62 0 0 Checkout 0,00 × × × Change user language × ArabicGermanEnglishSpanishFrenchHindiIndonesianItalianMalayDutchPolishPortugueseRomanianRussianSwedishThaiTurkishUkrainianVietnameseChineseInternational Modal ×