title: [Role of free-living nitrogen fixers in the nitrogen balance of soils].
mesh_terms: D000114:Acetylene / Q000378:metabolism; D001315:Australia; D002170:Canada; D003013:Clostridium / Q000378:metabolism; D000458:Cyanobacteria / Q000378:metabolism; D005030:Ethylenes / Q000096:biosynthesis; D009586:Nitrogen Fixation; D012231:Rhizobium / Q000378:metabolism; D012987:Soil / Q000032:analysis; D012988:Soil Microbiology; D014586:USSR; D014455:Ukraine; D014481:United States
chemical_list: D005030:Ethylenes; D012987:Soil; D000114:Acetylene
vernacular_title: Rol' vil'nozhyvuchykh azotfiksatoriv v azotnom balansi hruntiv.