SINAGA, A. H., Sinaga, . R. ., & Girsang, R. . (2021). Analysis of Lettuce (Lactuva Sativa L) Farming Efficiency, Jaranguda Village, Merdeka District, Karo Regency. Journal of Environmental and Agricultural Studies, 2(2), 118-124. https://doi.org/10.32996/jeas.2021.2.2.11