Bibliography:Pyrus calleryana (weed) (countries)
From Pestinfo-Wiki
Countries assigned in the literature database to Pyrus calleryana (weed):
Click on a country to display a list of the respective articles.
(in brackets numbers of "pest records" found)
North/Central America
U.S.A. (NE) (5)
U.S.A. (SE) (2)
