Northrop, F. S. C. 1893- The logic of the sciences and the humanities / F.S.C. Northrop. - New York : Macmillan Co., 1948. - xiv, 402 p. ; 21 cm. Bibliografía e índice. Subjects--Topical Terms: Logic.Methodology.Knowledge, Theory of. LC Class. No.: BC 71 / N877l 1948