@misc{indiciaeb4c043a9499a, title = {Comparative hydrogeology: An example of its use}, author = {Harry E. LeGrand}, year = {1970}, doi = {10.1130/0016-7606(1970)81[1243:chaeoi]2.0.co;2}, url = {https://pubs.usgs.gov/publication/70226848}, note = {Source identifier: 70226848} }