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_aBoyd, J. H. _914877 |
| 245 | 1 | 2 | _aA method of comparing logging system and machine concepts |
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_aCanada : _bForest Engineering Research Institute of Canada, _c1977 |
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_a11 p. _b: ilus. |
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_aSpecial report _v; 2 |
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_aCONVERSION _b10 _c20130109 _lUCH01 _h1313 |
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_aMadera aserrada. _969637 |
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_aSpecial report _v; 2 _9109163 |
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