Gaya APA
Directory of current population research 1988-1991:Philippines. (1988).
Manila:
Research Division.
Gaya Chicago
Directory of current population research 1988-1991:Philippines.
.
Manila:
Research Division,
1988.
.
Gaya MLA
Directory of current population research 1988-1991:Philippines.
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Manila:
Research Division,
1988.
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Gaya Turabian
Directory of current population research 1988-1991:Philippines.
Manila:
Research Division,
1988.
.