title: On the relationship among weight of nodules, their leghaemoglobin and bacteroid content, dry weight, and nitrogen content of soybean.
mesh_terms: D002452:Cell Count; D007874:Leghemoglobin / Q000032:analysis; D009584:Nitrogen / Q000032:analysis; D063245:Plant Development; D010944:Plants / Q000032:analysis / Q000382:microbiology; D012231:Rhizobium / Q000302:isolation & purification*; D012988:Soil Microbiology; D013025:Glycine max; D013045:Species Specificity
chemical_list: D007874:Leghemoglobin; D009584:Nitrogen