Ambus, P Natural carbon isotopes used to study methane consumption and production in soil. [electronic resource] - Isotopes in environmental and health studies Sep 2002 - 149-57 p. digital Publication Type: Journal Article ISSN: 1025-6016 Standard No.: 10.1080/10256010208033322 doi Subjects--Topical Terms: Carbon Isotopes--analysisEnvironmental Monitoring--methodsMethane--analysisOxidation-ReductionSoil Microbiology