TY - RPRT TI - Computer program for the Hewlett-Packard-9825A to contour and plot data collected from helium surveys AU - G. Michael Reimer AU - V.C. Dean PY - 1979 DO - 10.3133/ofr79865 UR - https://pubs.usgs.gov/publication/ofr79865 ID - ofr79865 ER -