Gaya APA
Bulletin of the Global Volcanism Network Volume 17, No. 1 - 12, January 31, 1992. ().
Washington:
Smithsonian Istitution.
Gaya MLA
Bulletin of the Global Volcanism Network Volume 17, No. 1 - 12, January 31, 1992.
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Washington:
Smithsonian Istitution,
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