1. 1
   Factors influencing the crude birth rate in Singapore, 1966-1973

   由 Chen, Ai Ju
   出版 1973

   Singapore : Singapore Family Planning & Population Board, [1973?]

   22 p. ; 30 cm.

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2. 2
   An analysis of the level and age pattern of fertility by birth-order

   由 Yap, Mui Teng
   出版 1977

   Singapore : Singapore Family Planning & Population Board, [1977?]

   4, [14] p. ; 30 cm.

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