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100 | 1 | _aGreengrass, Barry | |
245 | 0 | 0 |
_aUPOV and the protection of plant breeders : _bpast developments, future perspectives |
650 | 4 |
_aUPOV _94629 |
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650 |
_aSchutz _94055 |
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650 |
_aPflanzenzüchtung _93612 |
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773 | 0 |
_aIIC. 20(1989),5,622-636. _wz_iic |
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999 |
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