Hastuti, L. D. S. ., Nicklin, J. ., & Siregar, A. Z. . (1). Two Entomophagous Isolated From Sumatera Utara; Potential As Biocontrol Agent Againts Nematode. Jurnal Online Pertanian Tropik, 3(1), 43- 51. https://doi.org/10.32734/jopt.v3i1.2955