00505naa a2200169 a 450000100080000000500110000800800410001910000180006024501140007826000090019265000140020165000140021565000140022965000140024370000170025777300610027416149181995-06-27       1964    bl ---       0--  u    #d1 aNORRIS, D. O.  aThe symbiotic specialization of African Trifolium spp. in relation to their taxonomy and their agronomic use.  c1964  aAgronomia  aRhizobium  aTaxonomia  aTrifolium1 aMANNETJE, L.  tEast African Agric. For. J.gv.29, n.3, p.214-235, 1964.