TY - RPRT TI - Variation of the 3-μm absorption feature on Mars: observations over eastern Valles Marineris by the mariner 6 infrared spectrometer AU - Wendy M. Calvin PY - 1997 DO - 10.1029/96je03767 UR - https://pubs.usgs.gov/publication/70019566 ID - 70019566 ER -