Solís Ramírez, José. <br/><br/>
Direct and correlated responses to selection for high or low ultrasonic backfat depth in southdown sheep 

 - Palmerston North, N. Z. :  The author,  1988 
 - 185 h.  ; láms. ; gráf. 
<br/><br/> Fotocopia  Thesis (Master of Agricultural Science) -- Massey University 
<br/><br/><label>LCCN: </label>65743 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ganado lanar.<br/>Ultrasonido.