TY - RPRT TI - Fractionation of Fe isotopes by soil microbes and organic acids AU - Susan L. Brantley AU - Laura Liermann AU - Thomas D. Bullen PY - 2001 DO - 10.1130/0091-7613(2001)029<0535:fofibs>2.0.co;2 UR - https://pubs.usgs.gov/publication/70073357 ID - 70073357 ER -