TY - RPRT TI - Preliminary geologic map and sections of the Hogan 4 Northeast quadrangle, Lewis and Clark and Cascade Counties, Montana AU - R. G. Schmidt AU - D. A. Swanson AU - Peter Zubovic PY - 1964 DO - 10.3133/i409 UR - https://pubs.usgs.gov/publication/i409 ID - i409 ER -