Guidebook on the proper use of medicinal plants - Cortes-Maramba, Nelia; Saludez, Jerry; Sia, Isidro C.; Alegre, Olivia Y.; Solis-De Asis, Gilda A.; Bagnaes, Lourdes B.; Macalagay, Rodelio U.; Bajao, Angelina R. (Philippine Council for Health Research and Development, 1993)