Answer:
This encounter is largely owed to having come across Gawad Manlilikha ng Bayan (GAMABA) awardee Ginaw Bilog, a prolific Mangyan poet of the 'ambahan tradition of the Hanunoo Mangyan of Mansalay, Oriental Mindoro.
Source: Jul 11, 2003
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In Focus: Ginaw Bilog and the Ambahan Tradition - National ...