HARAHAP, F. S. H.; WALIDA, H. .; HARAHAP, D. A. .; OESMAN, R. .; FADHILLAH, W. . Response of Growth and Production of Corn (Zea Mays L) with Liquid Fertilizer in Labuhan Batu Regency. Jurnal Online PERTANIAN TROPIK, v. 6, n. 3, p. 363- 370, 1 Dec. 2019.