MANES, Gursahib Singh; SINGH, Surendra. Analytical Appraisal of Energy Input Use in the Production of Maize in Punjab. Journal of Agricultural Engineering, India, v. 44, n. 4, 2007. Disponível em: https://epubs.icar.org.in/index.php/JAE/article/view/14470. Acesso em: 29 oct. 2025.