TY - BOOK AU - Sirug, Winston S. TI - Mathematics of investment SN - 9789710445189 U1 - Fil. 511 S619m 2007 PY - 2007/// CY - Manila : PB - Mindshapers Co., Inc., KW - 1. Annuities. KW - 2. Business mathematics. N1 - Includes bibliographical references ER -