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3. ASGB (2017) Association of the sheep and goat breeders web site. Available at http://www.schok.cz
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5. CMCB/ASGB/DA (2016) Czech Moravian company of breeders Inc., Association of sheep and goat breeders and Dorper association, CZ. Annual report of sheep and goat breeding in the Czech Republic in a year 2015, November 2016, Prague, Czech Republic