Uji aktivitas antifouling metabolit sekunder tumbuhan isachne globose terhadap penempelan fitoepifiton di Situ Lab. Alam, FMIPA UI, Depok, Jawa Barat = Activity secondary metabolite of isachne globose as antifouling againts phytoepiphyton in Situ Lab. Alam FMIPA UI, Depok, West Java