Gaya APA
Bulletin of the Netherlands India Volcanological Survey Vol. III, No. 61-74, 1933-1935. ().
BATAVIA:
.Landsdrukkerij.
Gaya MLA
Bulletin of the Netherlands India Volcanological Survey Vol. III, No. 61-74, 1933-1935.
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BATAVIA:
.Landsdrukkerij,
.
.