Niwat Ruangpanit, Somnuek Pongumphai. Improvement and Development of Tin Mined Land for Forage Production. Agr. Nat. Resour. [internet]. 1990 Sep. 30 [cited 2026 Sep. 17];24(3):320-31. available from: https://li01.tci-thaijo.org/index.php/anres/article/view/242223