Chaiklieng, S. , Chagkornburee, C. , Songsermsakul, P. and Pruktharathikul, V. 2021. Risk Assessment and Protective Effect of Respirators on Airborne Paraquat Exposure during Simulated Spraying Operations. Trends in Sciences. 18, 22 (Nov. 2021), 498. DOI:https://doi.org/10.48048/tis.2021.498.