Circular No. 369 



Industrial Fumigation 

 Against Insects 



E. A. BACK, Principal Entomologist 



R. T. COTTON, Senior Entomologist 



Bureau of Entomology and Plant Quarantine 



For sale by the Superintendent of Documents, Washington, D. C. Price 10 cents 



UNITED STATES DEPARTMENT OF AGRICULTURE 

 WASHINGTON, D. C, AUGUST 1942 



