Nantawan Antarasena. (1989) The demand for otolaryngological manpower : a case study in Nakhon Nayok province, Thailand. National Institute of Development Administration,:ม.ป.ท.Nantawan Antarasena. 1989. The demand for otolaryngological manpower : a case study in Nakhon Nayok province, Thailand. ม.ป.ท.:National Institute of Development Administration,;Nantawan Antarasena. The demand for otolaryngological manpower : a case study in Nakhon Nayok province, Thailand. ม.ป.ท.:National Institute of Development Administration, 1989. Print.