Environmental impact of agricultural nitrogen and phosphorus use

Manylion Llyfryddiaeth
Prif Awduron:	Sharpley, Andrew N. (Awdur), Smith, S. J. (Awdur)
Fformat:	Analytics
Iaith:	English
Cyhoeddwyd:	1987.
Pynciau:	Nitrogen fertilizers. Water > Pollution. Environmental impact analysis. Groundwater. Watersheds.