title: Biogeochemistry: carbon budget in the black.
authors.forename: Michael W I
authors.initials: MW
authors.lastname: Schmidt
mesh_terms: D002244:Carbon / Q000032:analysis*; D002250:Carbon Radioisotopes; D005580:Fossils; D019015:Geologic Sediments / Q000737:chemistry*; D006108:Graphite / Q000032:analysis; D009792:Oceans and Seas
chemical_list: D002250:Carbon Radioisotopes; D002244:Carbon; D006108:Graphite