00538naa a2200169 a 450000100080000000500110000800800410001910000160006024501180007626000090019470000190020370000250022270000210024770000190026870000210028777300600030816124171995-06-27       1989    bl ---       0--  u    #d1 aMATHEWS, A.  aBiological characterization of root exudates and extracts from nonnodulating and supernodulating soybean mutants.  c19891 aKOSSLAK, R. M.1 aSENGUPTA GOPALAN, C.1 aAPPELBAUM, E. R.1 aCARROLL, B. J.1 aGRESSHOFF, P. M.  tMol. Plant Microbe Interac.gv.2, n.6, p.283-290, 1989.