TY - RPRT TI - Upper Mississippi embayment shallow seismic velocities measured in situ AU - Huaibao P. Liu AU - Y. Hu AU - J. Dorman AU - T.-S. Chang AU - J.-M. Chiu PY - 1997 DO - 10.1016/s0013-7952(97)00009-4 UR - https://pubs.usgs.gov/publication/70019683 ID - 70019683 ER -