Patent manual for employees of the United States Department of Agriculture, 1944; 

 - Washington,  U.S. Govt. Print. Off.  [1944] 
 - iii, 41 p.  illus.  23 cm. 
 - Miscellaneous publication (United States. Department of Agriculture) ;  no. 551. .
<br/><br/><label>LCCN: </label>agr44000180  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Patent laws and legislation--United States.
<br/><br/><label>LC Class. No.: </label>T223.T2  / A4 1944