1915. Map of Germany - Geological Map - Beelkow (Bielkowo), 1915. Scale=1:25,000. Topography, geology, rock types for parts of Poland (old Prussia, pre-W... Prussian Geological Institute.
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1915. Map of Germany - Geological Map - Zanow (Sianów), 1915. Scale=1:25,000. Topography, geology, rock types for parts of Poland (old Prussia, pre-WW II... Prussian Geological Institute.
1915. Geological Survey (U.S.). Scale 1:62,500 Relief shown by contours and spot heights. Title in upper center margin: Topography. Title in upper right margin: Washington, Mt. Ra... The Survey.
1915. Geological Survey (U.S.). Scale 1:62,500 Relief shown by contours and spot heights. Contour interval 50 ft. "Surveyed in 1893-94." Text and ill. on verso. Department of the ... The Survey.