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• Exterior view of one of the solar greenhouses at the University of Arizona Environmental Research Laboratory..., 04/1974.

  • Uploaded by: U.S. National Archives
  • License: No known copyright restrictions
  • 0 comments
  • 1 favorite
  • 6,677 views
  • Date taken: 1974-04
  • Date uploaded: 2012-04-10
  • Tags: usnationalarchives, documerica, environmentalprotectionagency, boydnorton, nara:arcid=555364
  • Visibility: public