Rules and regulations of Bureau of entomology and plant quarantine :
effective June 1, 1939.
|Corporate Author:||United States.|
[Washington] : U.S. Govt. print. off., 1939.
Advance print of chapter III, title 7, of the Code of federal regulations p. 673-829.
At head or title: United States Dept. of agric. Bureau of entomology and plant quarantine. Wash., D.C.
157 p. incl. tab., forms. ;
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