1. Agriculture Canada, 1990. Compendium of medicating ingredients brochures. Agriculture Canada, Ottawa.
2. Antibiotics in animal feeds in Great Britain;Braude;J. Anim. Sci.,1978
3. Sensitivity of Escherichia coli after exposure to lincomycin in vitro and in vivo;DeGeeter;Am. J. Vet. Res.,1976
4. Dunlop, R.H., 1996. Antimicrobial treatments and antimicrobial resistance of fecal Escherichia coli of swine in Ontario, Canada. PhD Dissertation, Univ. of Guelph, Guelph, Ontario, 1996, 351 p.
5. Associations among antimicrobial treatments and antimicrobial resistance of fecal Escherichia coli of swine on 34 farrow-to-finish farms in Ontario, Canada;Dunlop;Prev. Vet. Med.,1998