Showing 21 - 30 results of 31 for search '"Environmental protection research."', query time: 0.03s Refine Results
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    Environmental research needs in transportation.

    Published 1992
    Book
  3. 23
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  5. 25

    State of the art environmental protection research.

    Published 1982
    Book
  6. 26
  7. 27

    A final report

    Published 1977
    Book
  8. 28

    [Papers].

    Published 1977
    Book
  9. 29
  10. 30

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