Obregón González, Alberto. <br/><br/>
Gallos de pelea  secretos para el entrenamiento exitoso 
Dr. Alberto Obgregón González 
 - México  McGraw-Hill Interamericana  1999. 
 - xviii, 232 p.  ill. (some col.)  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 223-225. 
<br/><br/><label>ISBN: </label>9701023129  14.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cockfighting<br/>Roosters--Feedings and feeds.<br/>Roosters--Breeding.<br/>Roosters--Training.