Pernia, E. M. (1980). A note on migration and fertility. School of Economics, University of the Philippines.
Chicago-referens (17:e uppl.)Pernia, Ernesto M. A Note on Migration and Fertility. [Quezon City]: School of Economics, University of the Philippines, 1980.
MLA-referens (9:e uppl.)Pernia, Ernesto M. A Note on Migration and Fertility. School of Economics, University of the Philippines, 1980.
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