Effects of ginger on honey soft drinking; ឥទ្ធិពលខ្ញីលើភេសជ្ជៈទឹកឃ្មំ 8400 LY VISOTH; លី វីសុទ្ធ AGI LY 2009 B471 Or.1 Phnom Penh RUA 2009 2009 Text ix;41p. eng