Carl Troll

Structure Soils, Solifluction, and Frost Climates of the Earth [microform]

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Carl Troll Structure Soils, Solifluction, and Frost Climates of the Earth [microform]

Geoecological relations between the southern temperate zone and the tropical mountains

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Carl Troll Geoecological relations between the southern temperate zone and the tropical mountains

Tagebücher der Reisen in Bolivien 1926, 1927

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Carl Troll Tagebücher der Reisen in Bolivien 1926, 1927