Spirit Leveling in Texas - Part 4: North-central Texas, 1896-1938 Geological Survey (U.S.) Published: 1937 Total Pages: Get eBook
Publications of the Geological Survey, 1879-1961 Geological Survey (U.S.) Published: 1964 Total Pages: 526 Get eBook
A List of the Publications of the United States Geological Survey, Not Including Topographical Maps Geological Survey (U.S.) Published: 1879 Total Pages: 478 Get eBook
Spirit Leveling in Missouri, 1896-1938 John George Staack Published: 1938 Total Pages: 1294 Get eBook
