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[Geneva, Switzerland] : [The International Union for the Protection of New Varieties of Plants (UPOV)], 1985.
English | 1 UPOV |
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2.
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Rome : International Plant Genetic Resources Institute, 1994.
English | G 26 COO.M |
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3.
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Düsseldorf : Werner-Verlag, 1993.
German | G 26 BAU.P |
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4.
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[Geneva, Switzerland] : [The International Union for the Protection of New Varieties of Plants (UPOV)], 1985.
English | 1 UPOV |
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