TY - RPRT TI - Preliminary report on the stratigraphy and structure of the Kukpowruk and Kokolik Rivers area, Alaska AU - Robert M. Chapman AU - Edward G. Sable PY - 1949 DO - 10.3133/70222231 UR - https://pubs.usgs.gov/publication/70222231 ID - 70222231 ER -