Santman-Berends, I M G A Prevalence and risk factors for extended-spectrum β-lactamase or AmpC-producing Escherichia coli in organic dairy herds in the Netherlands. [electronic resource] - Journal of dairy science Jan 2017 - 562-571 p. digital Publication Type: Journal Article ISSN: 1525-3198 Standard No.: 10.3168/jds.2016-11839 doi Subjects--Topical Terms: AnimalsCattleEscherichia coliNetherlandsPrevalenceRisk FactorsSwinebeta-Lactamases