Nuchit, S., Lattirasuvan, T., Khonkaen, P., & Yatapakdee, T. (2023). Cost Analysis of Seedling Production at Northern Forest Seed Centre. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University, 17(2), 755–766. https://doi.org/10.14456/psruhss.2023.53