TY  - BOOK
AU  - Agapay, R.B.
TI  - Logic: : the essentials of deductive reasoning 
SN  - 971-08-4891-7
U1  - GC 160 A259 1991 
PY  - 1991///
CY  - Mandaluyong City
PB  - National Book Store
KW  - Logic
N1  - Includes bibliographical references
ER  -