@inproceedings{surdyk:hal-01435080, TITLE = {{Estimating pressure and impact of nitrates on groundwater at national level: New methodological developments}}, AUTHOR = {Surdyk, Nicolas and Gourcy, Laurence and Pinson, Stephanie}, URL = {https://brgm.hal.science/hal-01435080}, BOOKTITLE = {{LuWQ2017}}, ADDRESS = {The Hague, France}, YEAR = {2017}, MONTH = May, HAL_ID = {hal-01435080}, HAL_VERSION = {v1}, }