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Books by "Hartwig, G. (Georg)": Newest
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The Sea and Its Living Wonders A Popular Account of the Marvels of the Deep and of the Progress of Martime Discovery from the Earliest Ages to the Present Time
Hartwig, G. (Georg)
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The Tropical World Aspects of man and nature in the equatorial regions of the globe.
Hartwig, G. (Georg)
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The Polar World A popular description of man and nature in the Arctic and Antarctic regions of the globe
Hartwig, G. (Georg)
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The Subterranean World
Hartwig, G. (Georg)