Managing nitrogen for groundwater quality and farm profitability: Proceedings of a Symposium sponsored by Divisin A-5 of the American Society of Agronomy; S-1, S-3, S-4, S-6, and S-8 of the Soil Science Society of America; and Division C-3 and C-5 of the Crop Science Society of America, Anaheim, CA, 1988
por: Follet, R.F.
Publicado: (1991)