TY - RPRT TI - Simulated changes in water levels in the Minjur Aquifer, Riyadh area, Saudi Arabia AU - J. F. Williams AU - I.A. Sagaby PY - 1982 DO - 10.3133/ofr82371 UR - https://pubs.usgs.gov/publication/ofr82371 ID - ofr82371 ER -