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Dyfyniad Arddull ChicagoRacelis, Rachel H., and J.M. Ian S. Salas. A Note on Defining the Dependent Population Based on Age. Makati City: Philippine Institute for Development Studies, 2008.
Dyfyniad MLARacelis, Rachel H., and J.M. Ian S. Salas. A Note on Defining the Dependent Population Based on Age. Philippine Institute for Development Studies, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.