http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Response of monozygotic bovine twins to high and low concentrate rations
E.J. Warwick, R.E. Davis and R.L. Hiner.
Reprinted from Journal of animal science, volume 23, number 1 (Feb. 1964).