Hadthamard, N., Champa, L., & Thongpan, N. (2025). Study of the Distance of Head Space in Fermented Tank Affect to Plant Nutrients. Wichcha Journal Nakhon Si Thammarat Rajabhat University, 44(2), 44–57. https://doi.org/10.65217/wichchajnstru.2025.v44i2.263638