STATE OF ILLINOIS 

 DEPARTMENT OF REGISTRATION AND EDUCATION 



SYSTEMIC INSECTICIDE CONTROL OF 

 SOME PESTS OF TREES AND SHRUBS - 

 A PRELIMINARY REPORT 



L. L ENGLISH 

 WALTER HARTSTIRN 



Biological Notes No. 48 



August, 1962 



NATURAL HISTORY SURVEY DIVISION 



Urbana, Illinois 



