TY - RPRT TI - Computer-assisted photogrammetric mapping systems for geologic studies-A progress report AU - C. L. Pillmore AU - K.S. Dueholm AU - H.S. Jepsen AU - C.H. Schuch PY - 1981 DO - 10.1016/0031-8663(81)90012-0 UR - https://pubs.usgs.gov/publication/70011984 ID - 70011984 ER -