Johnson, Oliver A. Skepticism and cognitivism : a study in the foundations of knowledge / Olivier A. Johnson. - Berkeley : University of California Press, [1978] - XIII, 293 p. ; 22 cm. Biblioteca Jacinto MartĂnez Lacalle. ISBN: 0-520-03620-4 Subjects--Topical Terms: Escepticismo---HistoriaEpistemologĂa---Historia. Universal Decimal Class. No.: 165(091) 165.72(091)