TY - RPRT TI - Geologic history of the polar regions of Mars based on Mars Global surveyor data. II. Amazonian period AU - E.J. Kolb AU - K. L. Tanaka PY - 2001 DO - 10.1006/icar.2001.6676 UR - https://pubs.usgs.gov/publication/70022733 ID - 70022733 ER -