11. A bridge to mars Author/Creator: Gjerstad, Ole Publication/Creation: New York, NY : Filmakers Library, 2003 Format: Video or Visual Material Access & Availability: Loading
12. Briefing on Mars exploration : hearing before the Subcommittee on Space Science and Applications of the Committee on Science and Technology, U.S. House of Representatives, Ninety-fourth Congress, second session, September 29, 1976 Author/Creator: United States. Congress. House. Committee on Science and Technology. Subcommittee on Space Science and Applications, author Publication/Creation: [Getzville, New York] : William S. Hein & Company, [2021] Format: Book Access & Availability: Loading