Roots of Human Progress

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Work Title Roots of Human Progress
Subtitle Circular 31
Access
Open Access
Creators
  1. Edward Steidle
Keyword
  1. Earth and Mineral Sciences Experiment Station Circulars
License Attribution-NoDerivs 3.0 United States
Work Type Book
Publisher
  1. Pennsylvania State University
Publication Date 1948
Deposited September 17, 2014

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Version 1
published

  • Created
  • Added pk0698846s_version1_circular31.pdf
  • Added Creator Edward Steidle
  • Published