00692nam a2200217Ia 4500001000700000003000500007008004100012010001100053040000900064100001900073245017600092260003800268300001800306440000500324500001600329503000500345650003500350650003700385650002100422650003100443Z_3182CHAP220113s1994    xx            000 0 und d  a166290  cCHAP  aGrace, Neville  aManaging trace element deficiencies the diagnosis and prevention of selenium, cobalt, copper and iodine deficiencies in New Zealand Grazing Livestock  /cby  Neville Grace  aNew Zelanda  :bAgResearch,c1994  a70 p. ; ilus.  a  aFotocopía  a  aAnimalesxElementos minerales   aMinerales en nutrición animal   aMineralogía I.  aToxicología veterinaria