Showing 1 - 2 results of 2 for search 'Marion, Jeffrey L. (Jeffrey Lawrence)', query time: 0.08s Refine Results
  1. 1
    Problems and practices in backcountry recreation management : a survey of National Park Service managers /
    Government Document Book
  2. 2
    Developing a natural resource inventory and monitoring program for visitor impacts on recreation sites : a procedural manual /
    Government Document Book
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