TY  - RPRT
TI  - Prototype and preliminary geologic mapping of Mars from Mariner 6 & 7 data; parts 1, 2 and 3
AU  - John F. McCauley
AU  - Maretta West
AU  - David Holcomb Scott
AU  - James E. Peterson
AU  - Don E. Wilhelms
PY  - 1972
DO  - 10.3133/ofr72239
UR  - https://pubs.usgs.gov/publication/ofr72239
ID  - ofr72239
ER  -