Wilson, Louis F. <br/><br/>
A guide to insect injury of conifers in the Lake States / 
Louis F. Wilson 
 - Washington :  USDA ,  1977 
 - vi, 218p. :  ill. ;  24 cm. 
 - USDA agriculture handbook .
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Insects<br/>Diseases and pests<br/>Identification<br/>Conifers
<br/><br/><label>Dewey Class. No.: </label>632.7  / WIL