Sombat Leetragarn. 2002. Factors affecting medical herb usage case study : population at Salaya Amphur Buddhamonthon, Nakornpathom. Field of Study Appropriate Technology for Resource Development, Mahidol University;
Sombat Leetragarn. (2002) Factors affecting medical herb usage case study : population at Salaya Amphur Buddhamonthon, Nakornpathom . Mahidol University/Bangkok.
Sombat Leetragarn. Factors affecting medical herb usage case study : population at Salaya Amphur Buddhamonthon, Nakornpathom. . Bangkok:Mahidol University, 2002.
Sombat Leetragarn. (2002) Factors affecting medical herb usage case study : population at Salaya Amphur Buddhamonthon, Nakornpathom . Mahidol University/Bangkok.