1. Photocatalytic production of organic compounds from CO and H2O in a simulated Martian atmosphere;Hubbard,1970
2. Automated microbial metabolism laboratory;Levin;Exobiology,1969
3. Experiments and instrumentation for extraterrestrial life detection;Levin;Advan. Appl. Microbiol.,1968
4. Extraterrestrial life detection with isotopes and some aerospace applications;Levin,1966
5. Mark IV Gulliver—An in situ instrument for extraterrestrial life detection;Levin,1965