TY - RPRT TI - Ground-water pumpage in the Willamette lowland regional aquifer system, Oregon and Washington, 1990 AU - Charles A. Collins AU - Tyson M. Broad PY - 1996 DO - 10.3133/wri964111 UR - https://pubs.usgs.gov/publication/wri964111 ID - wri964111 ER -