Melchor, Marciano B. Introduction to biology / Marciano B. Melchor. - Manila : Rex Book Store, 2008. - xii, 152 p. : ill. ; 22 cm. Includes bibliographical references and index. ISBN: 9789712348730 Subjects--Topical Terms: Biology Study and teaching. LC Class. No.: QH315 / .M44 2008