Showing 1 - 2 results of 2 for search 'Ackermann, William', query time: 0.01s Refine Results
  1. 1

    Man-made lakes their problems and environment effects

    Published 1973
    Book

    Man-made lakes their problems and environment effects
  2. 2

    Man-made lakes as modified ecosystems

    Published 1972
    Book

    Man-made lakes as modified ecosystems

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