1. Perennial Weeds: Characteristics and Identification of Selected Herbaceous Species;Anderson,1999
2. A Short History of Nearly Everything;Bryson,2005
3. Biological control of red alder (Alnus rubra) with the fungus Nectria ditissima;Dorworth;Weed Technol.,1995
4. Composite list of C4 weeds;Elmore;Weed Sci.,2010
5. Plant Strategies and Vegetation Processes;Grime,1979