TY - RPRT TI - HP-9845T program for computing and plotting full Schlumberger sounding curves and master sets over three vertical layers; array expanded at right angles to strike AU - Adel A. R. Zohdy PY - 1980 DO - 10.3133/ofr80248 UR - https://pubs.usgs.gov/publication/ofr80248 ID - ofr80248 ER -