Benjawan Phetsuksiri. (1995) Pharmacokinetic study of intramammary ampicillin and cloxacillin in dairy cows and detection of their residues in milk. Mahidol University,:ม.ป.ท.Benjawan Phetsuksiri. 1995. Pharmacokinetic study of intramammary ampicillin and cloxacillin in dairy cows and detection of their residues in milk. ม.ป.ท.:Mahidol University,;Benjawan Phetsuksiri. Pharmacokinetic study of intramammary ampicillin and cloxacillin in dairy cows and detection of their residues in milk. ม.ป.ท.:Mahidol University, 1995. Print.