Chu และ Le Thi. (1992) Desired family size case study of women who gave birth in 1991 at the institute for protection of mother and newborn in Hanoi, Vietnam. Mahidol University,:ม.ป.ท.Chu และ Le Thi. 1992. Desired family size case study of women who gave birth in 1991 at the institute for protection of mother and newborn in Hanoi, Vietnam. ม.ป.ท.:Mahidol University,;Chu และ Le Thi. Desired family size case study of women who gave birth in 1991 at the institute for protection of mother and newborn in Hanoi, Vietnam. ม.ป.ท.:Mahidol University, 1992. Print.