Ahlgren, Gilbert H. <br/><br/>
Forage crops 

 - 2a ed. 
 - New York :   McGraw-Hill,   1956. 
 - viii, 536 p. :   il., fot., tabl., diagr. 
 - McGraw-Hill Publications in the Agricultural Sciences .
<br/><br/><label>Subjects--Index Terms: </label>Cultivos