TY - RPRT TI - Ground-water supplies of the Ypsilanti area, Michigan AU - Charles L. McGuinness AU - O.F. Poindexter AU - E. G. Otton PY - 1949 DO - 10.3133/wsp1078 UR - https://pubs.usgs.gov/publication/wsp1078 ID - wsp1078 ER -