Before revision: The cobalt deficiency was overcome by the development of "cobalt bullets", dense pellets of cobalt oxide mixed with clay given orally for lodging in the animal's rumen.Australian Academy of Science > Deceased Fellows > Hedley Ralph Marston 1900–1965 Accessed 12 May 201 2013.
After revision: The cobalt deficiency was overcome by the development of "cobalt bullets", dense pellets of cobalt oxide mixed with clay given orally for lodging in the animal's rumen.Australian Academy of Science > Deceased Fellows > Hedley Ralph Marston 1900–1965 Accessed 12 May 2013.