Singh, K.P., Singh, B. and Singh, T.P. (2002) “Performance Evaluation of Powered Harrow Plough in Comparison to other Tillage Systems in Silty-clay Loam Soil”, Journal of Agricultural Engineering, 39(1). Available at: https://epubs.icar.org.in/index.php/JAE/article/view/14165 (Accessed: 6 June 2026).