Richardson, D J Introduction: nitrate reduction and the nitrogen cycle. [electronic resource] - Cellular and molecular life sciences : CMLS Feb 2001 - 163-4 p. digital Publication Type: Journal Article ISSN: 1420-682X Standard No.: 10.1007/PL00000844 doi Subjects--Topical Terms: Eukaryotic Cells--metabolismNitrates--metabolismNitrogen--metabolismOxidation-ReductionProkaryotic Cells--metabolism