TY  - BOOK
AU  - Packard, Dennis  J.
AU  - Faulcuner, James E.
AU  - Draper, Larry W.
TI  - Introduction to logic: study guide 
SN  - 0442257066
PY  - 1980///
CY  - New York, London, Toronto
PB  - D. Van Nostraand Company
KW  - Logic
ER  -