TY - RPRT TI - Progress report on study of the geohydrology of the Mississippi Embayment area AU - E. M. Cushing AU - P. R. Speer AU - M.E. Schroeder PY - 1960 DO - 10.3133/ofr6034 UR - https://pubs.usgs.gov/publication/ofr6034 ID - ofr6034 ER -