<style face="normal" font="default" size="100%">Infrastructure of animal farms: key constructional elements in terms of biosecurity based on experience from Germany</style>

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0<style face="normal" font="default" size="100%">Infrastructure of animal farms: key constructional elements in terms of biosecurity based on experience from Germany</style><style face="normal" font="default" size="100%">Infrastructure of animal farms: key constructional elements in terms of biosecurity based on experience from Germany</style>