Barus, Rio, 		Girsang, Rosmaria, AND 		Luta, Devi.
" THE EFFECT OF COW MANURE FERTILIZER AND COCONUT WATER POC ON THE GROWTH AND PRODUCTION OF KAILAN PLANTS (Brassica oleracea Alboglabra)" <em>Proceeding International Conference of Science Technology and Social Humanities</em> [Online], Volume 1(30 November 2022)