Pham และ Le Tuan. (1995) Patterns of health service utilization of villagers in a rural area, Chantaburi province. Mahidol University,:ม.ป.ท.Pham และ Le Tuan. 1995. Patterns of health service utilization of villagers in a rural area, Chantaburi province. ม.ป.ท.:Mahidol University,;Pham และ Le Tuan. Patterns of health service utilization of villagers in a rural area, Chantaburi province. ม.ป.ท.:Mahidol University, 1995. Print.