โสมภีร์ ป, คำวงศ์ ว. Appropriate Harvesting Stage of Long Pepper (Piper retrofractum Vahl) to achieve Thai Herbal Phamacopeia. Thai Agric.Res.J. [internet]. 2023 Feb. 3 [cited 2026 Sep. 30];33(2):132-43. available from: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/77741