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2Publicado 1930Peiping : Published by the Geological Survey of China and the Section of Geology of the National Academy of Peiping, 1930-volumes : illustrations ; 26 cm
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4Publicado 1930Peiping : Published by the Geological Survey of China and the Section of Geology of the National Academy of Peiping, 1930-1 online resource (volumes) illustrations, plates, chartsCenter for Research Libraries, 1931-1935, 1947.
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