00705naa a2200229 a 450000100080000000500110000800800410001910000170006024501540007726000090023165000140024065000240025465000090027865000100028765300110029765300280030865300150033665300190035165300200037070000190039077300660040917994332017-04-25       1983    bl ---       0--  u    #d1 aBALON, E. K.  aFish assemblages in a river with unusual gradient (Luongo, Africa-Zaire system), reflection on river zonation and description of another new species.  c1983  aCichlidae  acommunity structure  afish  aPeixe  aChetia  aEstrutura de comunidade  aFloodplain  aFlucial system  aSistema fluvial1 aSTEWART, D. J.  tEnvironmental Biology of Fishesgv.9, n.3/4, p.225-252, 1983.