Media type: E-Article Title: Biogeochemical Cycling of Iron Isotopes Contributor: Johnson, Clark M.; Beard, Brian L. imprint: American Association for the Advancement of Science (AAAS), 2005 Published in: Science Language: English DOI: 10.1126/science.1112552 ISSN: 0036-8075; 1095-9203 Origination: Footnote: