SINGH, K P; SINGH, Bachchan; SINGH, T P. Performance Evaluation of Powered Harrow Plough in Comparison to other Tillage Systems in Silty-clay Loam Soil. Journal of Agricultural Engineering, India, v. 39, n. 1, 2002. Disponível em: https://epubs.icar.org.in/index.php/JAE/article/view/14165. Acesso em: 6 jun. 2026.