http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Evaluation of shugor, dubasi and watish subtypes of Sudan desert sheep at the El-Huda National Sheep Research Station, Gezira Province, Sudan
International Livestock Centre for Africa
A.H. Sulieman, A.R. Sayers, R.T. Wilson.
Includes bibliographical references (pages 27-30).