Efficiency Analysis Of Unmanned Aerial Vehicle (UAV) Spraying For Potato Cultivation In The Hilly Region Of Uttarakhand. International Journal of Environmental Sciences, [S. l.], v. 11, n. 6s, p. 1237–1244, 2025. DOI: 10.64252/pjeffk33. Disponível em: http://theaspd.com/index.php/ijes/article/view/7644.. Acesso em: 19 sep. 2025.