TY  - BOOK
AU  - De Castro, Leonardo D. PH.D.
AU  - De Villa, Agerico M. M.A.
TI  - Ethics and logic: : basic concepts/ 
U1  - Fil. 170 D34e 1993 
PY  - 1993///
CY  - Q.C.: 
PB  - Katha Publishing Co., Inc., 
KW  - 1. Ethics
KW  - 2. Logic.
N1  - Includes appendix
ER  -