Associations among antimicrobial drug treatments and antimicrobial resistance of fecal Escherichia coli of swine on 34 farrow-to-finish farms in Ontario, CanadaR. Dunlop, Robert Friendship, W D Black et al.|Preventive Veterinary Medicine|1998Cited by 110
Individual and group antimicrobial usage rates on 34 farrow-to-finish swine farms in Ontario, CanadaR. Dunlop, Robert Friendship, Scott A. McEwen et al.|Preventive Veterinary Medicine|1998Cited by 72