TY - RPRT TI - Fire and grazing impacts on plant diversity and alien plant invasions in the southern Sierra Nevada AU - Jon E. Keeley AU - Daniel Lubin AU - C. J. Fotheringham PY - 2003 DO - 10.1890/02-5002 UR - https://pubs.usgs.gov/publication/70025564 ID - 70025564 ER -