Příroda • zemědělství
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Rudolf Steiner
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Winter, Agnes C.; Hill, Cicely W.
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Simmons, Paula
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Carole Matthews
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Weiler, Michael
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Kladstrup, Don
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Committee on Nutrient Requirements of Swine; Subcommittee on Swine Nutrition; Committee on Animal Nutrition; Board on Ag
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Ezban, Michael (Virginia Politechnic and State University, USA)
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Shankland, Liz
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Kapusta Franciszek
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White, Janet
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Ritter Wolfgang
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Salatin, Joel
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Conrad, Ross
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Machatschek, Michael
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Václav Švamberk
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Holzer, Sepp
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Palmer, Eddie; Wilford, Nigel
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Hatcher, Mike