Gutierrez, Hermes G. An Illustrated manual of Philippine materia medica / Hermes G.Gutierrez - Manila : National Research Council of the Philippines, 1982 - 485 p. : ill. ; 23 cm. Subjects--Topical Terms: Materia medica--Handbooks, manuals, etc.--PhilippinesMedicinal plants--Handbooks, manuals, etc.--Philippines