

Distribution of gaseous (super 12) CO (sub 2) , (super 13) CO (sub 2) , and (super 14) CO (sub 2) in the sub-soil unsaturated zone of the western US Great Plains.
Keywords
partial pressure;respiration;pressure;diffusion;C 12;North Dakota;Great Plains;unsaturated zone;gases;transport;North America;oxidation;Texas;United States;C 14;carbon;isotopes;radioactive isotopes;carbon dioxide;stable isotopes;C 13;geochemistry;processes