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- Dissertation or Thesis
The geographic distribution of Azotobacter and Rhizobium meliloti in Nebraska soils in relation to certain environmental factors
The geographic distribution of Azotobacter and Rhizobium meliloti in Nebraska soils in relation to certain environmental factorsPeterson, Howard B.
The University of Nebraska - Lincoln ProQuest Dissertations & Theses, 1940. DP13631.





