[1]
Silvia, N. and Amila, S. 2019. Production of Hand Washing Soap from Ethanol Extract of Fern (Pteridophyta), Nampong Leaves (Siegesbeckia orientalis) and Thistle Plants (Calotropis gigantea). Journal of Natural Sciences and Mathematics Research. 5, 1 (Jun. 2019), 1–6.