Harlan, Jack Rodney. <br/><br/>
Theory and dynamics of grassland agriculture 

 - Princeton :  Van Nostrand,  1956 
 - 281 p.  :ilus. 
<br/><br/><label>LCCN: </label>73776 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pastos.<br/>Plantas forrajeras.
<br/><br/><label>Dewey Class. No.: </label>633.2  / H37