1. Summary of lunar stratigraphy - telescopic observations;Wilhelms;U.S. Geol. Survey Prof. Paper,1970
2. Preliminary geologic investigations of the Apollo 14 landing site;Swann;U.S. Geol. Survey Interagency Rept 29,1971
3. Rubidium-strontium chronology and chemistry of lunar material from the Ocean of Storms;Compston,1971
4. The application of beam transport theory to mass-spectrometer design;Clement,1971
5. Lunar crater morphology and relative age determination of lunar geologic units, Part 2, Applications;Offield,1969