Prapaporn Savaraj. 1998. Effect of cooking processes on the level of nitrate and nitrite in vegetables. Faculty of Graduate Studies, Mahidol University;
Prapaporn Savaraj. (1998) Effect of cooking processes on the level of nitrate and nitrite in vegetables . Mahidol University/Bangkok.
Prapaporn Savaraj. Effect of cooking processes on the level of nitrate and nitrite in vegetables. . Bangkok:Mahidol University, 1998.
Prapaporn Savaraj. (1998) Effect of cooking processes on the level of nitrate and nitrite in vegetables . Mahidol University/Bangkok.