TY  - BOOK
AU  - Churchill,Robert Paul
AU  - Churchill,Robert Paul
TI  - Logic: an introduction 
SN  - 0312023537
AV  - BC71 .C43 1990
U1  - 160 20
PY  - 1990///
CY  - New York
PB  - St. Martin's Press
KW  - Logic
N1  - Rev. ed. of: Becoming logical. 1986; Includes bibliographical references and index
ER  -