00551nam 2200157z- 450 9910712217903321(CKB)5470000002491947(EXLCZ)99547000000249194720230509c2019uuuu -u- -engAssessment of Canada thistle in northern U.S. forestsUnited States Department of Agriculture, Forest Service, Northern Research StationNewtown Square, PABOOK9910712217903321Assessment of Canada thistle in northern U.S. forests3291825UNINA