TY - SER AU - Heudi,O. TI - Determination of vitamin B12 in food products and in premixes by reversed-phase high performance liquid chromatography and immunoaffinity extraction N1 - YA2006 M05 D01 ISSN - 0021-9673 Sources - Journal of Chromatography A Sources - 110 (1-2) 2006 : 63-68 ER -