The Nitrogen Footprint Tool network: A multi-institution program to reduce nitrogen pollution - Castner, Elizabeth; Leah, Allison; Leary, Neal; Baron, Jill; Compton, Jana; Galloway, James; Hastings, Meredith; Kimiecik, Jacob; Lantz-Trissel, Jonathan; de la Riguera, Elizabeth; Ryals, Rebecca (Sustainability, 2017)