1. Lunar terrain mapping and relative-roughness analysis, Author/Creator: Rowan, Lawrence C. Publication/Creation: Washington : U.S. Govt. Print. Off, 1971 Format: Book Is Part Of: U.S. Geological Survey professional paper, no. 595-599. Access & Availability: Loading
2. Topographic maps of the polar, western, and eastern regions of Mars Author/Creator: Geological Survey (U.S.) Publication/Creation: [Reston, Va.] : U.S. Geological Survey, 1991 Format: Map Access & Availability: Loading