TY  - BOOK
AU  - Simpson, R.L.
TI  - Essentials of Symbolic Logic
SN  - 0-415-081871-4
U1  - 160/SIM/E 
PY  - 1991///
CY  - 
PB  - London: Routledge Publishers
KW  - Logic, Symbolic and Mathematical
KW  - Sentence and predicate logic|Conjunction and disjunction|Truth table and functions|Instructor and student
N1  - 4566; Logic, Symbolic and Mathematical
ER  -