1. Comparison of pethidine, buprenorphine and ketoprofen for postoperative analgesia after ovariohysterectomy in the cat;Middlesex, National Office of Animal Health S.L.I.N.G.S.B.Y.; S., L.; WATERMAN-PEARSON, A.E.,1998
2. Guidance to the veterinary profession. AMELIA;R., H.; E., W.A.T.E.R.M.A.N.A.; WEBSTER, A.J.F.; K, O.'B.R.I.E.N.J.,1998