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PDF 463 pages 143 weed species or types by ABCTLC.COM, Fairbanks, Alaska, also applies to Arizona, New Mexico and USA Southwest. Weed Identification...

PDF 32 pages 28 weed species identified by University of Nevada Cooperative Extension Weed Identification and Control Guide by Susan Donaldson and...

PDF 23 pages 54 weed species identified by Andrew J. Chomas, James J. Kells, J. Boyd Carey Department of Crop and Soil Sciences Michigan State...

PDF 5 pages 31 weed species identified by Dr. John Boyd and Dr. Jim Robbins, University of Arkansas Division of Agriculture. This list reflects...

PDF 156 pages 61 weed species identified by Maine Center for Invasive Aquatic Plants Maine Volunteer Lake Monitoring Program. Maine Field Guide to...

PDF 24 pages 45 weed species identified by University of Missouri-Columbia, Purdue University, Kansas State University, Ohio State University,...

PDF 24 pages 13 weed species identified by Anthony Cortilet Research Scientist Minnesota Department of Agriculture. Noxious Weeds of Minnesota 11...

PDF 12 pages 26 weeds identified by South Carolina Department of Natural Resources. Non-native plants are responsible for most aquatic weed problems...

PDF 2 pages 15 species by By Krishona Martinson, PhD, University of Minnesota Extension: Identification And Control Of Minnesota Primary Noxious...

PDF 10 pages 20 weeds identified by Pest Management Regulatory Agency, Saskatchewan Agriculture, Food and Rural Revitalization; Manitoba Agriculture...