https://forums.botanicalgarden.ubc.ca/threads/the-scourge-of-crown-vetch.14904/
The scourge of Crown Vetch | UBC Botanical Garden Forums
Hi everyone, I seem to be fighting a losing battle with the crown vetch that's taking over my community roundabout - so far i've been attacking each...
ubc botanical gardenthe scourgecrown vetchforums
https://digitalcollections.udel.edu/Documents/Detail/crown-vetch/63697
Crown Vetch - University of Delaware Digital Collections
university of delawarecrown vetchdigitalcollections