Circular 24
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Work Title Circular 24 Subtitle Mineral Industries Correspondence and Extension Class Instruction Access Creators - H.B. Northrup
- Edward Steidle
Keyword - Earth and Mineral Sciences Experiment Station Circulars
License Attribution-NoDerivs 3.0 United States Work Type Book Publisher - Pennsylvania State University
Publication Date 1946 Deposited September 17, 2014 Versions
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86682x4529_version1_circular24.pdf -
Added Creator H.B. Northrup
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Added Creator Edward Steidle
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