TY - RPRT TI - Biogeochemical sampling in the Mahd Adh Dhahab District, Kingdom of Saudi Arabia AU - Richard J. Ebens AU - Hansford T. Shacklette AU - Ronald G. Worl PY - 1983 DO - 10.3133/ofr83330 UR - https://pubs.usgs.gov/publication/ofr83330 ID - ofr83330 ER -