Iswahyudi, .-.; Samanhudi, .-.; Yunus, A.; Widiyastuti, Y.; Suryanti, V. The Ursolic Acid Content of Rumput Mutiara (Hedyotis Corimbosa L.) Grown in Various Locations. Int. J. Adv. Sci. Eng. Inf. Technol. 2020, 10, 749-755.