1927. Map and Geospatial Information Center, Lewis Library, Princeton University. Shapefile representing known mineral resources worldwide as of 1927. The locations and attributes of all points were taken from a two-part Weltlage...
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1927. B. G. Teubner. North Decimal Degree 71.500000. South Decimal Degree -60.000. East Decimal Degree 160.000. West Decimal Degree -172.4500. Alternate ... Leipzig, Germany : [s.n.], ca. 1927.
1927. George Phillips & Son. League of Nations Union. Alternate title: The League of Nations maps of the world. Multiple Mollweide projection. Ancillary ... London : [s.n.], [1927[?].
1927. Preussische Geologische Landesanstalt. Map shows mineral, metallic, and non metallic deposits; geological deposits clasification are color coded. Berlin : Verlag von Dietrich Reimer (Ernst Vohsen) A. G., 1927.