TY - RPRT TI - Climatically driven loss of calcium in steppe soil as a sink for atmospheric carbon AU - A.G. Lapenis AU - G.B. Lawrence AU - S.W. Bailey AU - B.F. Aparin AU - A.I. Shiklomanov AU - N.A. Speranskaya AU - M.S. Torn AU - M. Calef PY - 2008 DO - 10.1029/2007gb003077 UR - https://pubs.usgs.gov/publication/70000489 ID - 70000489 ER -