TY  - RPRT
TI  - Estimates of the mechanical properties of lunar surface using tracks and secondary impact craters produced by blocks and boulders
AU  - H. J. Moore
PY  - 1970
DO  - 10.3133/ofr70229
UR  - https://pubs.usgs.gov/publication/ofr70229
ID  - ofr70229
ER  -