TY  - RPRT
TI  - Sources of nitrate in the Arno River waters: Constraints from d 15 N and d 18 O
AU  - Barbara Nisi
AU  - Orlando Vaselli
AU  - Antonella Buccianti
AU  - Steven R. Silva
PY  - 2005
UR  - https://pubs.usgs.gov/publication/70027388
ID  - 70027388
ER  -