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  1. 1
    by Eldon, G. A.
    Published 1992
    Book
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    Fisheries survey of the Avon River, 1991-1992 /
  2. 2
    by Jowett, I. G.
    Published 1992
    Book
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    Flow requirements for brown trout in the Ashburton River /
  3. 3
    by Sagar, P. M., 1950-
    Published 1992
    Book
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    Flow requirements for wetland birds in the Ashburton River /

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