Barus, Rio, Rosmaria Girsang, & Devi Andriani Luta. " THE EFFECT OF COW MANURE FERTILIZER AND COCONUT WATER POC ON THE GROWTH AND PRODUCTION OF KAILAN PLANTS (Brassica oleracea Alboglabra)." Proceeding International Conference of Science Technology and Social Humanities [Online], 1 (2022): 530-536. Web. 5 Nov. 2024