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2. Statistical Tables for Biological, Agricultural and Medical Research, 5th ed;Fisher,1967
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4. Studies on the role of manganese in bone formation;Leach;I. Effect upon the mucopolysaccharide content of chick bone. J. Nutr.,1962
5. A tracer study with Mn56 on chicks with perosis produced by a synthetic manganese deficient diet;Mohamed;Proc. Soc. Exp. Biol. Med.,1942