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_aPorterfield, Richard L. _990995 |
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_aImpacts of the changing quality of timber resources _b: proceedings of a joint meeting of the ... |
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| 260 |
_aMadison, Wis. : _bForest Products Research Society, _c(1979) |
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| 300 |
_a49 p. _b: ilus. ; mapas ; gráfs. |
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| 490 |
_aProceedings _v; P-78-21 |
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_aBosques _xE.U.A. _914129 |
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_aIndustrias forestales _xE.U.A. _957988 |
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_aRecursos forestales _xE.U.A. _995046 |
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_aForest Products Research Society. _942327 |
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_aProceedings _v; P-78-21 _991715 |
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