@article {KNZ00460, title = {Source(s), fate and residence time of nitrate at two sites in Kansas--a comparison of carbonate and alluvial aquifers, Kansas Water Resources Research Institute Report, Contribution No. 312}, year = {1994}, pages = {81 -}, keywords = {LTER-KNZ}, author = {G. L. Macpherson and Schulmeister, M.K.} }