Chureeporn Chitchumroonchokchai. (1987) Nutrient intake and health status of Thai vegans : trace elements and vitamin B12. Mahidol University,:ม.ป.ท.Chureeporn Chitchumroonchokchai. 1987. Nutrient intake and health status of Thai vegans : trace elements and vitamin B12. ม.ป.ท.:Mahidol University,;Chureeporn Chitchumroonchokchai. Nutrient intake and health status of Thai vegans : trace elements and vitamin B12. ม.ป.ท.:Mahidol University, 1987. Print.