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, vol. 6, no. 1, pp. 40-54, Mar. 2021.