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Publisher
- Purdue University Libraries89
- Department of Geography, Indiana University70
- State Highway Commission of Indiana63
- Indiana Department of Geology and Natural Resources56
- William B. Burford48
- The Bureau31
- Published by W.W. Hixson & Co.22
- The Committee22
- W.W. Hixson & Co.17
- The Service (Washington, D.C.?)16
- Geological Survey (U.S.)15
- Indiana Geological Survey15
- Rand McNally14
- U.S. Dept. of Agriculture, Soil Conservation Service (Washington.)14
- Geological Survey Division (Urbana, Ill.)9
- H.M. Gousha8
- The Service (Indianapolis, Ind.?)8
- The Survey8
- The Commission7
- Indiana University6