info:oai:icrisat:4058info:ofi/fmt:xml:xsd:journalWaniS PWani, S PDartP JDart, P JUpadhyayaM NUpadhyaya, M NFactors affecting nitrogenase activity (C2H2 reduction) associated with sorghum and millet estimated using the soil core assay Canadian Journal of Microbiology1480-32751983291063-10698article