142M471B3J 2 Carbon Dioxide 2 Journal Article 2 NASA Discipline Exobiology 2 NASA Discipline Number 52-40 NASA Program Exobiology 2 Non-NASA Center 2 mehr ... Research Support, Non-U.S. Gov't 2 Research Support, U.S. Gov't, Non-P.H.S. 2 7440-44-0 1 Carbon 1 Carbonates 1 Research Support, U.S. Gov't, P.H.S. 1 Silicates 1 weniger ...