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  1.  34
    Contraceptive method change among rural Sri Lankan women.Amy Ong Tsui, Shyam Thapa, David Hamill & Victor de Silva - 1989 - Journal of Biosocial Science 21 (S11):133-148.
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  2. Dynamics of contraceptive use.Amy Ong Tsui & M. A. Herbertson - forthcoming - Journal of Biosocial Science. Supplement.
  3.  16
    The dynamics of contraceptive use: an overview.Amy Ong Tsui - 1989 - Journal of Biosocial Science 21 (S11):1-7.