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Forest Practices Branch
Biocontrol Development Program
Biological Control Success Images
Success of
Chrysolina hyperici
on St. John's wort
Chrysolina hyperici
release made on July 13, 1952 near Fruitvale
Chrysolina hyperici
release made on July 13, 1952 near Fruitvale
Photo credit: Peter Harris, Agriculture Canada
July 13, 1952
July 9, 2001
