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Automobile Tourism, Road Building, and Nature in the United States and Brazil, c. 1915-1935
BASE - Bielefeld Academic Search Engine , perspectivia.net - The publication platform of the Max Weber Foundation
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Locating Himalayan porters in the Archivalien der Expeditionsgesellschaften of the German Alpine Club (1929–1939)
perspectivia.net - The publication platform of the Max Weber Foundation, 2020
BASE - Bielefeld Academic Search Engine , perspectivia.net - The publication platform of the Max Weber Foundation