Sharp, M.A.; Parks, D.R.; Ehrlich, P.R. 1974. Plant resources and butterfly habitat selection. Ecology. 55(4): 870-875.
Sharp, M.A.; Parks, D.R.; Ehrlich, P.R. 1974. Plant resources and butterfly habitat selection. Ecology. 55(4): 870-875.
Western Forbs
Sharp, M.A.; Parks, D.R.; Ehrlich, P.R. 1974. Plant resources and butterfly habitat selection. Ecology. 55(4): 870-875.