1. Geologic map of the near side of the moon;Wilhelms;U.S. Geol. Survey Map 1–703,1971
2. Lunar color boundaries and their relationship to topographic features;Whitaker;The Moon,1972
3. Color differences on the lunar surface;McCord,1968
4. Lunar spectral types;McCord;J. Geophys. Res.,1972
5. Remote sensing of lunar surface mineralogy implications from visible and near infrared reflectivity of Apollo 11 samples;Adams,1970