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  1. Circular 32

    Resource Type: Book and
    Creator: Edward Steidle
    Keyword: Earth and Mineral Sciences Experiment Station Circulars
    Publisher: Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2014-09-17T22:19:57Z
  2. Circular 29

    Resource Type: Book and
    Creator: Edward Steidle
    Keyword: Earth and Mineral Sciences Experiment Station Circulars
    Publisher: Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2014-09-17T22:19:57Z
  3. Correspondence and Extension-Class Instruction

    Resource Type: Book and
    Creator: Edward Steidle and H.B. Northrup
    Keyword: Earth and Mineral Sciences Experiment Station Circulars
    Publisher: Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2014-09-17T22:19:56Z
  4. Frederick Augustus Genth. 1820-1893, Chemist-Mineralogist-Collector

    Resource Type: Book and
    Creator: S. Zerfoss and W.M. Myers
    Keyword: Earth and Mineral Sciences Experiment Station Circulars
    Publisher: Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2014-09-17T22:19:55Z
  5. Circular 24

    Resource Type: Book and
    Creator: H.B. Northrup and Edward Steidle
    Keyword: Earth and Mineral Sciences Experiment Station Circulars
    Publisher: Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2014-09-17T22:19:55Z
  6. Mineral Industries Extension Services - Class Centers in Pennsylvania 1931-1946

    Resource Type: Book and
    Keyword: Earth and Mineral Sciences Experiment Station Circulars
    Publisher: Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2014-09-17T22:19:55Z
  7. Principles of Mineral Conservation

    Resource Type: Book and
    Creator: W.M. Myers
    Keyword: Earth and Mineral Sciences Experiment Station Circulars
    Publisher: Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2014-09-17T22:19:54Z
  8. Future of Pennsylvania's Mineral Industries

    Resource Type: Book and
    Creator: Edward Steidle
    Keyword: Earth and Mineral Sciences Experiment Station Circulars
    Publisher: Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2014-09-17T22:19:52Z
  9. Post-War Possibilities of Bituminous Coal Mining

    Resource Type: Book and
    Creator: Edward Steidle
    Keyword: Earth and Mineral Sciences Experiment Station Circulars
    Publisher: Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2014-09-17T22:19:51Z
  10. Circular 20

    Resource Type: Book and
    Keyword: Earth and Mineral Sciences Experiment Station Circulars
    Publisher: Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2014-09-17T22:19:51Z