00285nam a2200121Ia 4500008004100000020001500041041000800056082001400064100001400078245004300092260002000135300000800155230724s2007 xx und d a1566701384 aeng a363.739 4 aLAENEN A. aRIVER QUALITY DYNAMICS AND RESTORATION bCRC PRESSc2007 a406