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Lua i Stíl Chicago (17ú heag.)Sadongdong, Martin A. "Pinoys Age 17 and Below May Be Vaccinated in September - Galvez." Manila Bulletin 2021.
Lua MLA (9ú heag.)Sadongdong, Martin A. "Pinoys Age 17 and Below May Be Vaccinated in September - Galvez." Manila Bulletin, 2021.
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