Gaya APA
IAVCEI, .
(1991).
Bulletin of Volcanology Volume 53 Number 8 November 1991
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Heidelberg:
Springer International.
Gaya MLA
IAVCEI, .
"Bulletin of Volcanology Volume 53 Number 8 November 1991".
Heidelberg:
Springer International,
1991.
Text.