Piwsaoad, Jagrapan, and Chayapat Phusampao. “GREENHOUSE SOLAR DRYER FOR DRYING ANDROGRAPHIS PANICULATA HERB”. Life Sciences and Environment Journal 23, no. 2 (September 9, 2022): 324–333. Accessed May 4, 2024. https://ph01.tci-thaijo.org/index.php/psru/article/view/247600.