_52 Written by Dan Cropper on December 1, 2020. Bittman S, Dedina M, Howard C.M., Oenema O, Sutton MA. Options for Ammonia Mitigation Guidance from the UNECE Task Force on Reactive Nitrogen. Edinburgh, UK , 2014 www.clrtap-tfrn.org, (accessed Oct 23, 2020). Previous Next