Amphika Poowanasatien. 2006. Nitrate and nitrite contents in various types of vegetables from conventional, hygienic and organic cultivations. Field of Study Nutrition, Mahidol University;
Amphika Poowanasatien. (2006) Nitrate and nitrite contents in various types of vegetables from conventional, hygienic and organic cultivations . Mahidol University/Bangkok.
Amphika Poowanasatien. Nitrate and nitrite contents in various types of vegetables from conventional, hygienic and organic cultivations. . Bangkok:Mahidol University, 2006.
Amphika Poowanasatien. (2006) Nitrate and nitrite contents in various types of vegetables from conventional, hygienic and organic cultivations . Mahidol University/Bangkok.