1. The geologic history of the moon Author/Creator: Wilhelms, Don E. Publication/Creation: Denver, CO (Federal Center, Box 25425, Denver 80225) : For sale by the Books and Open-file Reports Section, U.S. Geological Survey Resource Type: Book Access & Availability: Loading
2. Stratigraphy of part of the lunar near side Author/Creator: Wilhelms, Don E. Publication/Creation: Washington : U.S. Govt. Print. Off, 1980 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1045-1047. Access & Availability: Loading
3. Summary of lunar stratigraphy -- telescopic observations, Author/Creator: Wilhelms, Don E. Publication/Creation: Washington : U.S. Govt. Print. Off, 1970 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 595-599. Access & Availability: Loading