3,4Dihydroxybenzoic Acid 3,4Dihydroxybenzaldehyde From The Fern Trichomanes chinense L.; Isolation, Antimicrobial And Antioxidant Properties. - Nova Syafni, Deddi Prima Putra, Dayar Arbain (J. Indo. Jour. Chem., XII (3) 2012 : 273-278)