Piper, Charles V.  1867-1926. <br/><br/>
The production of hairy vetch seed. 
By C.V. Piper ... and Edgar Brown ... 
 - Washington,  Govt. print. off.,  1915. 
 - 8 p. incl. tables.  23 cm. 
 - U.S. Dept. of agriculture. Bureau of plant industry. Circular  no. 102 .
 - United States.  Bureau of Plant Industry.  Circular ;  no. 102. .
<br/><br/><label>LCCN: </label>agr12001670  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vetch.
<br/><br/><label>LC Class. No.: </label>SB19  / .A33 no. 102