TY  - BOOK
AU  - Guttenplan, Samuel D.
TI  - The languages of logic: an introduction to formal logic 
SN  - 155786988X (pbk. : alk. paper)
U1  - 160 
PY  - 1997///
CY  - Oxford, UK
PB  - Blackwell Publishers
KW  - Logic
ER  -