Wallada Wiwatpanashart. (1996) Determinants of day-care service of average working women in Bangkok-based manufacturing firms. National Institute of Development Administration,:ม.ป.ท.Wallada Wiwatpanashart. 1996. Determinants of day-care service of average working women in Bangkok-based manufacturing firms. ม.ป.ท.:National Institute of Development Administration,;Wallada Wiwatpanashart. Determinants of day-care service of average working women in Bangkok-based manufacturing firms. ม.ป.ท.:National Institute of Development Administration, 1996. Print.