000 00327nam a2200133Ia 4500
008 220721s1980 xx 000 0 und d
041 _aeng
082 _a574.191
100 _aTownsend, Collin R.
245 _aEcology of Streams and Rivers
260 _aLondon
_bEdward Arnold
_c1980
300 _a68P.
999 _c79289
_d79289