Formal methods an introduction to symbolic logic and to the study of effective operations in arithmatic and logic - Dordrecht D Reidel 1962 - xiv,170p. cm. - Synthese Library . Standard No.: 65,084 Source: Textual Subjects--Topical Terms: PHILOSOPHY Dewey Class. No.: R14, K2,K2;1-;2-;3 (PD) (TTR)