Kittiya Kattiviriyapinyo. (1999) Assessment of drug procurement system of private hospitals in Thailand in 1998. Mahidol University,:ม.ป.ท.Kittiya Kattiviriyapinyo. 1999. Assessment of drug procurement system of private hospitals in Thailand in 1998. ม.ป.ท.:Mahidol University,;Kittiya Kattiviriyapinyo. Assessment of drug procurement system of private hospitals in Thailand in 1998. ม.ป.ท.:Mahidol University, 1999. Print.