Winyangkul, P., and W. Ruankham. “REVALENCE ND ACTORS REDICTING EPRESSION MONG EOPLEINPHAYAMENGRAI UNICIPALITY, HAYAMENGRAI ISTRICT, HIANG AI ROVINCE”. ife ciences and nvironment ournal, ol. 18, no. 1, Apr. 2017, pp. 51-60, https://ph01.tci-thaijo.org/index.php/psru/article/view/58078.