000 004080000a22001330004500
090 _aAR
_b04789
100 1 _aWright, J. F.
_998949
700 1 _aFurse, M. T.
_998950
700 1 _aArmitage, P. D.
_998951
245 1 0 _aRivpacs a technique for evaluating the biological quality of rivers in the U. K.
041 0 _aInglés
942 _cARTICULO
773 1 _tEuropean water pollution Control
_h4
_q15-25
_d1993
_g3
999 _c13889
_d13889