TY  - SER
AU  - Fedder,Robert
AU  - Ploger,Annette
TI  - Solid-phase extraction of vitamins A and E from animal feeds: a substitute for liquid-liquid extraction 
ISSN  - 1060-3271
Sources  - Journal of AOAC International
Sources  - 88 (6) 2005 : 1579-1582
ER  -