Hedgcock, George G.  1863-1946. <br/><br/>
A disease of pines caused by Cronartium pyriforme / 
by George G. Hedgcock and William H. Long. 
 - Washington, D.C. :  U.S. Dept. of Agriculture,  1915. 
 - 20 p., 2 p. of plates :  1 map ;  23 cm. 
 - Bulletin / United States Department of Agriculture ;  no. 247 .
 - Bulletin (United States. Department of Agriculture) ;  no. 247. .
<br/><br/> Caption title.  Contribution from the Bureau of Plant Industry.  "Professional paper." 
<br/><br/>Bibliography: p. 20. 
<br/><br/><label>LCCN: </label>agr15001023  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pine--Diseases and pests.
<br/><br/><label>LC Class. No.: </label>S21  / .A7 no. 247 
<br/><br/><label>National Agricultural Library Call No.: </label>1  / Ag84B no.247