Showing 1 - 2 results of 2 for search '"Geological Survey circular ;"', query time: 0.13s Refine Results
  1. 1
    Algal conditions and the potential for future algal problems in the Willamette River, Oregon /
    by Rickert, David A., 1940-
    Published 1977
    “...Geological Survey circular ;...”
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    Government Document eBook
  2. 2
    Evaluation of planning alternatives for maintaining desirable dissolved-oxygen concentrations in Willamette River, Oregon /
    by Rickert, David A., 1940-
    Published 1980
    “...Geological Survey circular ;...”
    Get full text
    Government Document eBook
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