Gregory, K.E. <br/><br/>
Composite breeds to use heterosis and breed differences to improve efficiency of breef production  : in cooperation with the Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln 
K.E. Gregory, L.V. Cundiff, and R.M. Koch 
 - Washington  Agricultural Research Service  1999 
 - 75 p.  28 cm 
 - Technical Bulletin / Agricultural Research Service  1875 .
 - Technical Bulletin / Agricultural Research Service .
<br/><br/><label>Subjects--Index Terms: </label>Produccion animal Mejoramiento animal Produccion de carne Vigor hibrido Hibridacion