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• Dr. R.L. San Martin, New Mexico State University, Las Cruces shows a closed coil type solar heating panel whose blackened tubes..., 04/1974

  • Uploaded by: U.S. National Archives
  • License: No known copyright restrictions
  • 0 comments
  • 3 favorites
  • 6,778 views
  • Date taken: 1974-04
  • Date uploaded: 2012-04-10
  • Tags: usnationalarchives, documerica, environmentalprotectionagency, boydnorton, nara:arcid=555293
  • Visibility: public