@PROCEEDINGS {EAGLESHAM:1979, title = {Assessing nitrogen contribution of cowpea and soybean crop to soil}, author = {Eaglesham, A. R. J. and Ayanaba, A. and Ranga Rao, V. and Eskew, D. L. }, booktitle = {Seventy-first Annual Meeting of the Agronomy Society, Fort Collins Colorado, August 5-9, 1979}, year = {1979}, month = {August}, }