TY - RPRT TI - New light on a dark subject: On the use of fluorescence data to deduce redox states of natural organic matter (NOM) AU - Donald L. Macalady AU - Katherine Walton-Day PY - 2009 DO - 10.1007/s00027-009-9174-6 UR - https://pubs.usgs.gov/publication/70034806 ID - 70034806 ER -