@misc{indiciae9ea22624add6, title = {Southwest principal aquifers regional ground-water quality assessment}, author = {D.W. Anning and Susan A. Thiros and L. M. Bexfield and T.S. McKinney and J.M. Green}, year = {2009}, doi = {10.3133/fs20093015}, url = {https://pubs.usgs.gov/publication/fs20093015}, note = {Source identifier: fs20093015} }