TY  - BOOK
AU  - LEVISON ARNOLD B.
TI  - Study guide to accompany Barker The elements of logic: Department of philosophy universty of North Carolina at Greensboro
SN  - 0070037221
U1  - 160 
PY  - 1965///
CY  - New York
PB  - McGraw-Hill Book Company 
ER  -