Citation: M. Marekkozaczuk et al., TN5 INSERTION MUTANTS OF PSEUDOMONAS SP-267 DEFECTIVE IN SIDEROPHORE PRODUCTION AND THEIR EFFECT ON CLOVER (TRIFOLIUM-PRATENSE) NODULATED WITH RHIZOBIUM-LEGUMINOSARUM BV TRIFOLII, Plant and soil, 179(2), 1996, pp. 269-274