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"Mayon Volcano Bulletin 20". Philippine Institute of Volcanology and Seismology. January 2, 2010. Archived from the original on September 29, 2015. Retrieved November 17, 2015.
"Mayon Volcano Bulletin 16". Philippine Institute of Volcanology and Seismology. December 29, 2009. Archived from the original on September 29, 2015. Retrieved November 17, 2015.
"Mayon Volcano Bulletin 31". Philippine Institute of Volcanology and Seismology. January 13, 2010. Archived from the original on September 29, 2015. Retrieved November 17, 2015.
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"Mayon spews ash anew". Volcano Monitor. Philippine Daily Inquirer. October 28, 2009. Archived from the original on August 7, 2011. Retrieved December 5, 2009.
"Mayon Volcano Bulletin 3". Philippine Institute of Volcanology and Seismology. December 16, 2009. Archived from the original on July 6, 2015. Retrieved November 17, 2015.
Papa, Alcuin & Nasol, Rey M. (January 1, 2010). "Mayon quieting down". Philippine Daily Inquirer. Archived from the original on January 3, 2010. Retrieved January 2, 2010.
"Mayon Volcano Bulletin 13". Philippine Institute of Volcanology and Seismology. December 26, 2009. Archived from the original on September 29, 2015. Retrieved November 17, 2015.
"Mayon Volcano Bulletin 20". Philippine Institute of Volcanology and Seismology. January 2, 2010. Archived from the original on September 29, 2015. Retrieved November 17, 2015.
"Mayon Volcano Bulletin 16". Philippine Institute of Volcanology and Seismology. December 29, 2009. Archived from the original on September 29, 2015. Retrieved November 17, 2015.
"Mayon Volcano Bulletin 31". Philippine Institute of Volcanology and Seismology. January 13, 2010. Archived from the original on September 29, 2015. Retrieved November 17, 2015.
Mirabueno, M. H. T.; Okuno, M.; Nakamura, T.; Newhall, C. G.; Kobayashi, T. (2006). "AMS Radiocarbon Dating of Paleosols Intercalated with Tephra Layers from Mayon Volcano, Southern Luzon, Philippines: A Preliminary Report". Bulletin of the Volcanological Society of Japan. 36 (2). Volcanological Society of Japan: 23–28. ISSN0386-118X. ... the oldest eruptive event must have taken place shortly before 20 cal kyr BP.