the study on economic efficiency of paraya production in teak chhou district, kampot province (ការសិក្សាអំពីប្រសិទ្ធភាពសេដ្ឋកិច្ចនៃផលិតកម្មដំណាំល្ហុងនៅស្រុកទឹកឈូ ខេត្តកំពត) TOUT, KAKADA. AED TOU 2013 B266 Or.1 Phnom Penh RUA 2013 2013 Text xi, 49p. https://drive.google.com/file/d/1DyDKIEff6O7kt2gmSrtYa4RMoRB0ILc4/view?usp=sharing