TY - RPRT TI - Field comparison of shallow seismic sources AU - R. D. Miller AU - S. E. Pullan AU - J.S. Waldner AU - F.P. Haeni PY - 1986 DO - 10.1190/1.1442061 UR - https://pubs.usgs.gov/publication/70206243 ID - 70206243 ER -