000 00290nam a2200121Ia 4500
008 140122s9999 xx 000 0 und d
082 _a591 Lock Maur
100 _aLock M
245 _aPerspectives in running water ecology
260 _b
_c1981
700 _aWilliams D D
942 _cBK
_2ddc
999 _c4340
_d4340