Gaya APA
Bulletin of the Netherlands India Volcanological Survey Vol. IV No. 75-86, 1936-1938. ().
BATAVIA:
.Landsdrukkerij.
Gaya MLA
Bulletin of the Netherlands India Volcanological Survey Vol. IV No. 75-86, 1936-1938.
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BATAVIA:
.Landsdrukkerij,
.
.