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100 0 0 _aBonsen, K. J. M.
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245 1 0 _aBarrier zone formation as a resistance mechanism of elms to dutch elm disease
500 _aSobretiro de : IAWA Bulletin n. s.: 6 (1): 71-77, 1985
590 _aBATCH-UPD
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590 _aCONVERSION
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650 1 4 _aOlmo
_xEnfermedades.
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650 1 4 _aOlmo
_xVariedades resistentes a enfermedades.
_983182
700 0 _aElgersma, D. M.
_936272
700 0 _aScheffer, R. J.
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901 _aBK
942 _cREIMP
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