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THE INSECT PEST SURVEY 
BULLETIN 
A periodical review of entomological conditions throughout the United States 
issued on the first of each month from March to December, inclusive. 
^ 
£ 
^ 
Volume 11 
March 1, 1931. 
Number 1 
BUREAU OF ENTOMOLOGY 
UNITED STATES 
DEPARTMENT OF AGRICULTURE 
AND 
THE STATE ENTOMOLOGICAL 
AGENCIES COOPERATING 
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