1. Studies in veal production. Pennsylvania State Coll;Bechdel;Ann. Rep. Offic. Doc.,1916
2. Milk production of beef Shorthorn cowa;Dawson;J. Anim. Sci.,1960
3. Betirage zur Kenntais des Colostrums der Kuh Milchow;Engel;Forsch.,1924
4. Federer, W. T. 1963. Experimental Design. Theory and Application. Macmillan, New York.
5. Records of performance tests for beef cattle in breeding herds. Milk production, milk production of dams and growth of calves;Gifford;Arkansas Agr. Exp. Sta., Bull.,1953