Klose, Nelson,  1914- <br/><br/>
America's crop heritage;  the history of foreign plant introduction by the Federal Government. 

 - Ames,  Iowa State College Press  [1950] 
 - x, 156 p.  illus., ports., maps.  24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>agr50000590  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant introduction.<br/>Agriculture--History.--United States
<br/><br/><label>LC Class. No.: </label>SB109  / .K56 
<br/><br/><label>Dewey Class. No.: </label>631.524