Kaewsuralikhit, S., & Thongra-ar, P. (2011). Utilization of  Neem  Extracted Substance, Bt and Entomopathogenic Nematode on Azolla’s lnsect  Pest Control. Thai Agricultural Research Journal, 29(3), 262–274. https://doi.org/10.14456/thaidoa-agres.2011.23