Khasana, N. P. I., Nurul W, M., & Khumaira, A. (2021). The effect of adding casein hydrolysate as a protein source in the culture of the bacteria Paenibacillus polymyxa at wilker office of food and horticultural plants protection (PTPH) Bojonegoro. International Journal of Health Science and Technology, 3(2), 155–163. https://doi.org/10.31101/ijhst.v3i1.2244