Curtis, Winterton C. <br/><br/>
The past teaches thatit mus not be restricted to utilitarian problems :   the whole horizon must be swept for facts. 

 - Nueva York-XXU :   American Museum,   1918. 
 - páginas 553-564 :   ilustraciones en blanco y negro 
 - Irregular 
 - Vol. XVIII, no. 7 (Nov. 1918) 
 - The American Museum journal ;   Vol. XVIII, no. 7 .
<br/><br/> Research in Science. 
<br/><br/><br/>Inglés. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ANIMALES
<br/><br/><label>Subjects--Index Terms: </label>ZOOLOGIA