TY - RPRT TI - Crassulacean acid metabolism in Isoetes bolanderi in high elevation oligotrophic lakes AU - Jon E. Keeley AU - C.M. Walker AU - R.P. Mathews PY - 1983 DO - 10.1007/bf00384543 UR - https://pubs.usgs.gov/publication/1007647 ID - 1007647 ER -