agustin, rizki dwi et al. 2024. Comparison Of Secondary Metabolite Level In Vetiver Root Extract (Vetiveria zizanioides L.) Based On Shading Factors To Support Natural Substance Chemistry Lectures. Chemistry Education Practice. 7, 1 (May 2024), 141–151. DOI:https://doi.org/10.29303/cep.v7i1.6326.