TY - RPRT TI - Fractionation of fulvic acid by iron and aluminum oxides: influence on copper toxicity to Ceriodaphnia dubia AU - Kathleen S. Smith AU - James F. Ranville AU - Emily K. Lesher AU - Daniel J. Diedrich AU - Diane M. McKnight AU - Ruth M. Sofield PY - 2014 DO - 10.1021/es502243m UR - https://pubs.usgs.gov/publication/70148381 ID - 70148381 ER -