Hopkins, A. D.  1857-1948. <br/><br/>
Some of the principal insect enemies of coniferous forests in the United States. 

 - Washington,  1903. 
 - p. 265-282.  illus., pl. xxviii-xxix.  23 cm. 
<br/><br/> In: United States, Dept of agriculture.  Yearbook, 1902, p. 265-282.  illus., pl. xxviii-xxix. 23 cm.  Washington, 1903. 
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<br/><br/><label>LCCN: </label>agr07000944  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Forest insects.
<br/><br/><label>LC Class. No.: </label>SB761  / .H8