Sari Rahayu, Murni, Nurhayati ., Radite Tistama, and Yenni Asbur. 2018. “PEG Based Alternative Stimulants and the Effect on Latex Production and Physiology of 6 Years Old of Clone PB 260”. International Journal of Engineering & Technology 7 (4.15): 465-68. https://doi.org/10.14419/ijet.v7i4.15.25257.