Pichai Kongpitak, Pongtep Akratanakul, Weerawan Amornsak. The study of Relationship Between Using Production Technology and Quantity of Pollen to Royal Jelly Production. Agr. Nat. Resour. [internet]. 1990 Sep. 30 [cited 2026 Sep. 18];24(3):268-77. available from: https://li01.tci-thaijo.org/index.php/anres/article/view/242160