Title 7--Agriculture, Chapter III--Bureau of Entomology and Plant Quarantine, part 301--domestic quarantine notices :
dutch elm disease quarantine /
United States Department of Agriculture, Bureau of Entomology and Plant Quarantine.
Washington, D. C. : U.S. G.P.O., 1941.
Plant diseases /
Dutch elm disease > Dutch elm disease / Quarantine.
Plant quarantine > Plant quarantine / Law and legislation > Plant quarantine / Law and legislation / United States.
"Revision of quarantine and regulations, effective October 1, 1941"--p. .
4 p. ;
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