TY - RPRT TI - Environmental changes in the Tule Lake basin, Siskiyou and Modoc Counties, California, from 3 to 2 million years before present AU - David P. Adam AU - J. Platt Bradbury AU - Hugh J. Rieck AU - Andrei M. Sarna-Wojcicki PY - 1990 DO - 10.3133/b1933 UR - https://pubs.usgs.gov/publication/b1933 ID - b1933 ER -