000 00290nam a2200121Ia 4500
008 160710s1992 xx 000 0 und d
082 _a577.6 JEF
100 _aTEFFRIES
245 _aFRESHWATER ECOLOGY PRINCIPLES AND APPLICATION
260 _bCBS
_c1992
300 _a285
942 _2ddc
_cB
999 _c55759
_d55759