Guidebook on the proper use of medicinal plants - Maramba, Nelia P. Cortez-; Saludez, Jerry D.; Sia, Isidro C.; Alegre, Olivia Y.; De Asis, Gilda A. Solis-; Bagnaes, Lourdes B.; Macalagay, Rodelio U.; Bajao, Angelina R. (National Science and Technology Authority, 1982)