TY - RPRT TI - Map showing water-level decline in the alluvial aquifer, spring 1964 to spring 1974, upper Black Squirrel Creek basin, Colorado AU - Donald L. Bingham AU - John M. Klein PY - 1974 DO - 10.3133/70197610 UR - https://pubs.usgs.gov/publication/70197610 ID - 70197610 ER -