Moving pictures of algae. Professor Harvey of University of Minnesota and Park Naturalist Frank Thore studying (Environmental Impacts) plant life of thermal waters at Mammoth Hot Springs, Yellowstone National Park.
<ul><li>Keywords: nps staff; ranger; photography; algae; NPS Personnel(NPS History Collection Themes); Science(NPS History Collection Themes); Environmental Conservation: Natural Conservation(NPS History Collection Themes); Flora(NPS History Collection Themes)</li></ul>
Cribbs
1923<div style="display: none;">date QS:P571,+1923-00-00T00:00:00Z/9</div>
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