Adawiyah R. Penentuan Nilai Sun Protection Factor secara In Vitro pada Ekstrak Etanol Akar Kalakai (Stenochlaena palustris Bedd) dengan Metode Spektrofotometer UV-Vis: Determination of In Vitro Sun Protection Factor Value on Ethanol Extract of Kalakai Root (Stenochlaena palustris Bedd) with UV-Vis Spectrophotometer Method. J Surya Medika [Internet]. 2019Feb.26 [cited 2024Apr.19];4(2):26-31. Available from: https://journal.umpr.ac.id/index.php/jsm/article/view/604