Villegas, Bernardo M. Economics: An introduction / Bernardo M. Villegas and Victor A. Abola - Fourth edition - Southeast Asian Science Foundation,Inc. Sinag-Tala Publishers,Inc. 1992 - 383 pages.; 26 cm. Include index ISBN: 9715540619 Subjects--Topical Terms: Economics LC Class. No.: HB 171.5 V541 1992 F