

@article {12908,
	title = {Determining the source of nitrate pollution in the Niger discontinuous aquifers using the natural 15N14N ratios},
	journal = {Journal of Hydrology},
	volume = {199},
	number = {3-4},
	year = {1997},
	pages = {239{\textendash}251},
	author = {Girard, Pierre and Hillaire-Marcel, Claude}
}
