STATE OF ILLINOIS 
Henry Horner, Governor 
DEPARTMENT OF REGISTRATION AND EDUCATION 
John J. Hallihan, Director 
PROGRESS IN THE CONTROL OF 
ELM DISEASES IN NURSERIES 
J. C. Carter 
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Printed by Authority of the State of Illinois 
NATURAL HISTORY SURVEY DIVISION 
Theodore H. Frison, Chief 
Biological Notes No. 10 Urbana, Illinois June, 1939 
Matura) History Sur ¥py 
Library 
