TY - RPRT TI - Geophysical profile data processing programs for the Hewlett Packard model 2647A graphics terminal AU - Hamdy Sadek AU - Vincent J. Flanigan AU - George Kakatsakis PY - 1981 DO - 10.3133/ofr81447 UR - https://pubs.usgs.gov/publication/ofr81447 ID - ofr81447 ER -