De la Paz, Reynaldo M. Essentials of Biology / Reynaldo M. De la Paz ; Edna A. Amparado ; Josefina B. De Jesus ; Jomari Gonzales. - Corrected edition. - Quezon City : ACLC Trading Enterprises, 2003. - xvi, 270 p. : black and white illustrations ; 25 cm., paperback. Includes references. ISBN: 9719037067 Subjects--Topical Terms: Biology.Biology--Study and teaching. Dewey Class. No.: Fil 570 E78 2003