TY  - BOOK
AU  - Cruz, C.L.
TI  - Introduction to logic
SN  - 971-08-5797-5
U1  - GC 160 C957 1995 
PY  - 1995///
CY  - Mandaluyong City
PB  - National Book Store
KW  - Logic
N1  - Includes bibliographical references and index
ER  -