TY - RPRT TI - Constraining the oxygen isotopic composition of nitrate produced by nitrification AU - Danielle S. Boshers AU - Julie Granger AU - Craig R. Tobias AU - J.K. Bohlke AU - Richard L. Smith PY - 2019 DO - 10.1021/acs.est.8b03386 UR - https://pubs.usgs.gov/publication/70202638 ID - 70202638 ER -