Richardson, D.; Smith, E.F.; Brethour, J.R.; Koch, B.A.; Tsien, W.S.; Boren, F.W.; Carmack, B.D.
(Kansas Agricultural Experiment Station, 1961)
Cobalt is a trace mineral element which is essential to the health and well-being of animals. If it is deficient in the ration, it should be supplied. A cobalt bullet, which is placed in the rumen, was developed in Australia ...