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Displaying items 21 - 22 of 22
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21. Southern pine defoliation growth response data

Author(s):
Weise, David R.; Wade, Dale D.; Johansen, Ragnar W.; Combs, David C.; Ach, Edward E.

22. National river recreation study data: a nationwide survey of river recreation use from 1977-1984

Author(s):
Cole, David N.