Scaling use of the rust fungus Puccinia punctiformis for biological control of Canada thistle (Cirsium arvense (L.) Scop.): First report on a U.S. statewide effort by Dan W. Bean, Kristi Gladem, Karen Rosen, Alexander Blake, Robert E. Clark, Caitlin Henderson, John Kaltenbach, Joel Price, Emily L. Smallwood, Dana K. Berner, Stephen L. Young, Robert N. Schaeffer

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