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  1. 1
    nork Simon, Julian Lincoln 1932-
    Argitaratua 1974
    Liburua

    The effects of income on fertility
  2. 2
    nork Kocher, James E.
    Argitaratua 1973
    Liburua

    Rural development, income distribution, and fertility decline
  3. 3
    Thesis

    A study of family income and expenditures, Sulat, Eastern Samar
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