00333nam a22001217a 4500020001800000082002100018100004700039245004800086250000600134260004100140300000800181650002200189  a9789086860616  a636.508 4bSCH/T  aSchlegel, P.aDurosoy, S.aJongbloed, A.W.  aTrace elements in animal production systems  a1  bWageningen Academic Publishersc2008  a347  aPoultry Nutrition