Field-scale nutrient cycling and sustainability: comparing natural and agricultural ecosystems
Muramoto, Joji; Ellis, Erle C.; Li, Zhengfang; Machado, Rodrigo M.; Gliessman, Stephen R.. 2001. Field-scale nutrient cycling and sustainability: comparing natural and agricultural ecosystems. Agroecosystem Sustainability: Developing Practical Strategies: 121-134. [Download PDF]