TY - RPRT TI - Geophysical investigations in Saudi Arabia, seismic refraction profile, status report No. 2, 15 January 1978 AU - Ralph J. Lamson AU - H. Richard Blank AU - J. H. Healy PY - 1978 DO - 10.3133/ofr78772 UR - https://pubs.usgs.gov/publication/ofr78772 ID - ofr78772 ER -