References
- Andrews , E. D. 1956 . Cobalt Deficiency . N.Z. J. Agric. , 92 : 239 – 239 .
- Davis , G. K. , Jack , F. H. and McColl , J. T. 1956 . Relation of Levels of Molybdenum to Cobalt Utilisation in Cattle . J. Anim. Sci. , 15 : 1232 – 1232 .
- Grange , L. I. 1929 . A Classification of Soils of Rotorua County . N.Z. J. Sci. Tech. , 11 : 219 – 228 .