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  1. Compte rendu du Congrès international d'essais de semences. Discussions at the International Seed Testing Conference. Verhandlungen der Internationalen Konferenz für Samenprüfung à/in Copenhague (Danemark), 6.- 10. VI. 1921.
    By: International Seed Testing Congress. - Dorph-Petersen, Knud,
    Publication info: Hamburg,Druck von Lütcke & Wulff
    Contributed by: Cornell University Library
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