Solís Ramírez, José <br/><br/>
Direct and correlated responses to selection for high or low ultrasonic backfat depth in southdown sheep  / 
por  José Solís Ramírez 
 - Massey  :  El autor,  1988 
 - 185 h. 
<br/><br/>Thesis (Master of agricultural Science in animal Science) -- Massey University 
<br/><br/><label>LCCN: </label>167826 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ganado lanar <br/>Ultrasonido