Johnson, Warren T. <br/><br/>
Insects that feed on trees and shrubs / 
by Warren T. Johnson and Howard H. Lyon ; contributing authors, C.S. Koehler, J.A. Weidhaas. 
 - 2nd ed., rev. 
 - Ithaca :  Comstock Pub. Associates,  1991. 
 - 560 p. :  col. ill. 
<br/><br/><label>ISBN: </label>0801426022 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ornamental trees--Diseases and pests--United States.<br/>Ornamental shrubs--Diseases and pests--United States.<br/>Insect pests--Identification.--United States<br/>Insect pests--Pictorial works.--United States<br/>Ornamental trees--Diseases and pests--Canada.<br/>Ornamental shrubs--Diseases and pests--Canada.<br/>Insect pests--Identification.--Canada<br/>Insect pests--Pictorial works.--Canada