TY  - BOOK
AU  - Copi,I.M.
AU  - Cohen,Carl
TI  - Introduction to logic
SN  - 978-1-138-29070-9
U1  - 160 
PY  - 2016///
CY  - London
PB  - Routledge
KW  - Philosophy
KW  - Logic
N1  - includes index
ER  -