TY - JOUR T1 - Determination of Beta-Lactam residues in milk by high performance liquid chromatography JO - Brazilian Archives of Biology and Technology A1 - Brito, Roseane Brandão de A1 - Junqueira, Roberto Gonçalves SN - 1516-8913 UL - 10.1590/S1516-89132006000200007 VL - 49 Y1 - 2006 PB - Brasil ER -