Chantaramanee, W., Khamsorn, S., & Phukhao, T. (2017). THE MODEL OF ENVIRONMENTAL DEVELOPMENT TO ENHANCE RESEARCH QUALITATIVE CLASSROOM ACTION RESEARCH OF TEACHERS IN THE EDUCATIONAL EXTENSION SCHOOLS UNDER THE OFFICE OF THE BASIC EDUCATION COMMISSION IN THE LOWER NORTHERN PROVINCE AREA. ife ciences and nvironment ournal, 18(1), 209-217. etrieved from https://ph01.tci-thaijo.org/index.php/psru/article/view/69307