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