@misc{indiciae66251d1f2a1d, title = {Land use and land cover, 1971-76, Shiprock, New Mexico; Arizona, Colorado, Utah}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1980}, doi = {10.3133/l195}, url = {https://pubs.usgs.gov/publication/l195}, note = {Source identifier: l195} }