TY - RPRT TI - Potentiometric surface of the Edwards-Trinity aquifer system and contiguous hydraulically connected units, west-central Texas, winter, 1974-75 AU - Eve L. Kuniansky PY - 1990 DO - 10.3133/wri894208 UR - https://pubs.usgs.gov/publication/wri894208 ID - wri894208 ER -