Reproduction in farm animals 
edited by B. Hafez, E.S.E. Hafez 
 - 7th ed 
 - Philadelphia  Lippincott Williams & Wilkins  2000 
 - 509 p.  il. n.  29 cm 
<br/><br/><label>ISBN: </label>0683305778 
<br/><br/><label>Subjects--Index Terms: </label>Medicina veterinaria Fisiologia animal Reproduccion Ganado