Villegas, Bernardo M. Managerial economics / Bernardo M. Villegas - Manila : Sinag-Tala Publishers, Inc., 1993. - 413 pages : 23 cm. Includes index. ISBN: 9711170663 Pbk., Np. Subjects--Topical Terms: Managerial economics LC Class. No.: HF 5353 V54 1993 F