Wanted, spotted knapweed : reward offered.

2011-07-142011-07-141985https://hdl.handle.net/10365/17336W-865; posterNDSU Agriculture and University Extension: Creative Commons Licensing Deed (http://creativecommons.org/licenses/by-nc-sa/3.0/)Weeds.Wanted, spotted knapweed : reward offered.W-865