Dewangan, K N, and Prasanna Kumar G.V. “Comparative Study of Lever Operated Knapsack Sprayer and Controlled Droplet Application Sprayer for Hill Agriculture in the North Eastern India”. Journal of Agricultural Engineering 43, no. 3 (September 5, 2006). Accessed October 23, 2025. https://epubs.icar.org.in/index.php/JAE/article/view/14793.