Yuwadee Wittayapun. 2008. A causal model of occupational health services delivery in Thai primary care units. Field of Study Public Health, Mahidol University;
Yuwadee Wittayapun. (2008) A causal model of occupational health services delivery in Thai primary care units . Mahidol University/Bangkok.
Yuwadee Wittayapun. A causal model of occupational health services delivery in Thai primary care units. . Bangkok:Mahidol University, 2008.
Yuwadee Wittayapun. (2008) A causal model of occupational health services delivery in Thai primary care units . Mahidol University/Bangkok.