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Pedro and the Yo-yo: Man and Myth — Positively Filipino | Online Magazine for Filipinos in the Diaspora
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Did ancient Filipinos really invent the yo-yo? - FlipScience - Top Philippine science news and features for the inquisitive Filipino.
Top Yo Origin - La Tienda Del YoYo
yo-yo - Wiktionary, the free dictionary
Yo-yo - Wikipedia
Duncan Toys Company | The Original, World's #1 Yo-Yos
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History of the yo-yo — King Community
