Lewis, James K. (James Kelly), 1924-, authorNatural Resource Ecology Laboratory, Colorado State University, publisher2007-01-032007-01-031965-1975http://hdl.handle.net/10217/15759born digitaltechnical reportsengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.South Dakota Agricultural Experiment StationGrassland ecology -- South Dakota -- CottonwoodAgriculture -- Research -- South Dakota -- CottonwoodText