00525naa a2200193 a 450000100080000000500110000800800410001910000180006024500460007826000090012465000180013365000090015165000160016065300240017665300220020065300240022265300140024677300710026018088002017-04-05       1988    bl ---       0--  u    #d1 aJARVIS, A. C.  aEcological problems in Hartbeespoort Dam.  c1988  aphytoplankton  aAlga  aEcossistema  aAnaerobic condition  aBluue-green algal  aCondicao anaerobica  aEcosystem  tJournal Limnology Society South Africangv.14, n.2, p.82-86, 1988.