Tsunami disaster at barangay Tibpuan - Tsunami damage at Lebak, caused by the earthquake of magnitude (Ms)= 7.9, in Moro Gulf. Island of Mindanao, Philippines. August 16, 1976. [Earthquake occurred August 16, 1976, centered at 6.3 degrees north and 124.0 degrees east. The earthquake killed about 8,000 people] Published on back cover of U.S. Geological Survey. Earthquake Information Bulletin. v. 14. no. 4. July-August 1982.

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