In search of historical truth selected papers of the 9th national conference on local and national history. Butuan City, 8-12 November 1988
| Egile korporatiboa: | , |
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| Beste egile batzuk: | |
| Formatua: | Liburua |
| Argitaratua: |
Quezon City
Philippine National Historical Society Heritage Pub. House
1992., c1992.
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| Gaiak: |