Nantawan Wongwongsri. 2000. Effect of vegetable eating on the levels of nitrate and nitrite in urine and saliva. Faculty of Graduate Studies, Mahidol University;
Nantawan Wongwongsri. (2000) Effect of vegetable eating on the levels of nitrate and nitrite in urine and saliva . Mahidol University/Bangkok.
Nantawan Wongwongsri. Effect of vegetable eating on the levels of nitrate and nitrite in urine and saliva. . Bangkok:Mahidol University, 2000.
Nantawan Wongwongsri. (2000) Effect of vegetable eating on the levels of nitrate and nitrite in urine and saliva . Mahidol University/Bangkok.