Ptak, H. (1952). Venezuela. Zukunftsland am Orinoco. Vowinckel.
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Citación estilo Chicago
Ptak, Heinz-Peter. Venezuela. Zukunftsland Am Orinoco. Heidelberg: Vowinckel, 1952.
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Cita MLA
Ptak, Heinz-Peter. Venezuela. Zukunftsland Am Orinoco. Vowinckel, 1952.
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Warning: These citations may not always be 100% accurate.