Muhamad Aditya hidayah. “ANALYSIS OF BATOPANG (BIOINSECTICIDE OF BROTOWALI STEM EXTRACT AND KETAPANG LEAVES) BASED ON SNI 02-3128-1992 AND EFFECTIVENESS TEST AGAINST WOOD GRASSHOPPER (VALANGA NIGRICONIS) WITH THE METHOD LETHAL CONCENTRATION 50”. JARES (Journal of Academic Research and Sciences), Vol. 6, no. 1, Mar. 2021, pp. 40-54, doi:10.35457/jares.v6i1.1408.