Singh และ Charan. (2000) Iodine deficiency disorders and its determinants among school children aged 8-12 years in Chiangmai province, Thailand. Mahidol University,:ม.ป.ท.Singh และ Charan. 2000. Iodine deficiency disorders and its determinants among school children aged 8-12 years in Chiangmai province, Thailand. ม.ป.ท.:Mahidol University,;Singh และ Charan. Iodine deficiency disorders and its determinants among school children aged 8-12 years in Chiangmai province, Thailand. ม.ป.ท.:Mahidol University, 2000. Print.