Brahma และ Tapan Kumar. (2000) Factors affecting utilization of health center in Photharam district of Ratchaburi province, Thailand. Mahidol University,:ม.ป.ท.Brahma และ Tapan Kumar. 2000. Factors affecting utilization of health center in Photharam district of Ratchaburi province, Thailand. ม.ป.ท.:Mahidol University,;Brahma และ Tapan Kumar. Factors affecting utilization of health center in Photharam district of Ratchaburi province, Thailand. ม.ป.ท.:Mahidol University, 2000. Print.