00505nam a2200193Ia 4500008004100000041001200041082000800053082001100061100001800072100001100090245005600101260001600157260005900173260000900232300001500241365002500256650001300281650001700294150909s9999    xx            000 0 und d  aEnglish  a576  bTOL/OR  aTolkamp H.H    eAuthor  aOrganism-Substrate relationships in lowland streams  aNetherlands  bCentre for Agricultural publishing and Documentation,   c1980  a211  Pages  aRs.70                 aMicrobes  aMicrobiology