VIXATHEP S, ONPHANHDALA P. ປະສິດທິພາບຂອງການປູກຝັງໃນເຂດທົ່ງພຽງ ແລະ ເນີນສູງໃນ ສປປ ລາວ: Efficiency of lowland and upland farming in Lao PDR,. JLEBM [Internet]. 2013 Aug. 1 [cited 2025 Mar. 14];1(1):18-37. Available from: https://feb.nuol.edu.la/journal/index.php/jleb/article/view/54