TY - BOOK AU - Cohen,Morris Raphael AU - Nagel,Ernest TI - An introduction to logic, AV - BC108 .C67 1993 PY - 1962///] CY - New York PB - Harcourt, Brace & World KW - Logic KW - Methodology N1 - This edition contains only the first part of the original text first published in 1934 under title: An introduction to logic and scientific method ER -