TY  - RPRT
TI  - Lunar terrain mapping and relative roughness analysis
AU  - Lawrence C. Rowan
AU  - John Francis McCauley
AU  - Esther A. Holm
PY  - 1969
DO  - 10.3133/ofr69235
UR  - https://pubs.usgs.gov/publication/ofr69235
ID  - ofr69235
ER  -