000 00305nam a2200133Ia 4500
008 170324s9999 xx 000 0 und d
082 _a574.526
100 _a"Cummins, K.W."
245 0 _aRiver and stream ecosystems
260 _bElsevier Science B.V.
260 _c1995
365 _b0.00
942 _cBK
999 _c4814
_d4814