United Nations. Economic Commission for Europe <br/><br/>
Agricultural mechanization :   seed drills / 
Centre national d'e\tudes et d'expe\rimentation de machinism 
 - New York :  United Nations,  1963 
 - ii, 45 p. ; 26 cm. 
<br/><br/> United Nations publication. Sales number: 63.II.E/Mim. 19. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drills (Planting machinery)
<br/><br/><label>Dewey Class. No.: </label>631.3  / UNI