TY  - BOOK
AU  - Villegas, Bernardo M. 
AU  - Abola, Victor A. 
TI  - Economics an introduction, 5th ed.
SN  - 971-92459-0-5.
U1  - 339 V714e 2001 5th
PY  - 2001///
CY  - Philippines : 
PB  - Center for Research and Communication Foundation, Inc., 
N1  - Includes index
ER  -