Não informado. (2009). Observations Made at Secondary Stations in Netherlands East India. [s.n.].
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Observations Made at Secondary Stations in Netherlands East India. Batavia, Indonesia: [s.n.], 2009.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Observations Made at Secondary Stations in Netherlands East India. [s.n.], 2009.
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