@proceedings {KNZ00655,
	title = {Nitrate loading of shallow ground water, prairie vs. cultivated land, northeastern Kansas, USA},
	year = {1998},
	pages = {165 -168},
	publisher = {A.A. Balkema},
	address = {Roterdam},
	keywords = {LTER-KNZ},
	author = {G. L. Macpherson}
}
