Pukklay, P. . and Chuesaard, T. (2021) “TOTAL PHENOLIC, FLAVONOID CONTENTS AND ANTIOXIDANT ACTIVITY OF PROPOLIS EXTRACTS FROM NAN PROVINCE”, PSRU Journal of Science and Technology. Phitsanulok, Thailand, 6(1), pp. 13–27. available at: https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/243598 (accessed: 8 January 2026).