Melli ‏​‏​‏​​‏​‏​​‏​‏​‏​‏​‏​‏ A. Effect of different tillage systems in some soil physical properties, operation costs of machines and yield of wheat crop. AJSRP [Internet]. 2016 Mar. 30 [cited 2026 Jan. 24];2(2):107. Available from: https://journals.ajsrp.com/index.php/ajsrp/article/view/1442