Hoover, R. Instruments, Methods, and Missions for the Investigation of Extraterrestrial Microorganisms. SPIE Digital Library.
Chicago-viite (17. p.)Hoover, Richard. Instruments, Methods, and Missions for the Investigation of Extraterrestrial Microorganisms. SPIE Digital Library.
MLA-viite (9. p.)Hoover, Richard. Instruments, Methods, and Missions for the Investigation of Extraterrestrial Microorganisms. SPIE Digital Library.
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