citation
Palm, Cheryl; Machado, Pedro L. O.A.; Mahmood, Tariq; Melillo, Jerry; Murrell, Scott T.; Nyamanagra, Justice; Scholes, Mary; Sisworo, Elsje; Olsen, Jorgen E.; Pender, John; Stewart, John; Galloway, James N. 2004. Societal responses for addressing nitrogen fertilizer needs: Balancing food production and environmental concerns. Agriculture and the Nitrogen Cycle: Assessing the Impacts of Fertilizer Use on Food Production and the Environment. Moiser, Arvin; Syers, J. Keith; Freney, John. (Eds.). pp. 71–93.