Buffington, Ronald Edwin, 1943-White, JohnPatterson, W. N.2015-08-052015-08-051967-11http://hdl.handle.net/10919/554338 pagesapplication/pdfen-USVirginia Cooperative Extension materials are available for public use, re-print, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University.LD5655.A762Dairying -- PeriodicalsDairy cattle -- PeriodicalsExtension publicationDairy breedsBreeding valuePerformance indexes