Vasachol Ngamsomchan. 2000. The effectiveness of health promoting personal hygiene program for grade 5-6 students in Uthaithani province. Faculty of Graduate Studies, Mahidol University;
Vasachol Ngamsomchan. (2000) The effectiveness of health promoting personal hygiene program for grade 5-6 students in Uthaithani province . Mahidol University/Bangkok.
Vasachol Ngamsomchan. The effectiveness of health promoting personal hygiene program for grade 5-6 students in Uthaithani province. . Bangkok:Mahidol University, 2000.
Vasachol Ngamsomchan. (2000) The effectiveness of health promoting personal hygiene program for grade 5-6 students in Uthaithani province . Mahidol University/Bangkok.