Songga J, Molenaar R, Wullur H. Economic Analysis of Four-Wheel Tractor Harfia HTR 445 at the Agricultural Machinery Brigade, Department of Agriculture and Fisheries, Tomohon City. Jteta [Internet]. 2025 Dec. 29 [cited 2026 Mar. 23];16(1):49-60. Available from: https://ejournal.unsrat.ac.id/v3/index.php/teta/article/view/65247