@Book{RANFE2009010729, title = "Tratado de farmacognosia", author = "Trease, George Edward", publisher = "M\'{e}xico [etc.] : Interamericana", ISBN = "ISBN 84-7605-341-X", editor = "Interamericana", URL = "http://bibliotecavirtual.ranf.com/i18n/consulta/registro.do?id=10729", year = "1986", }