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100   $a20110511d1980----km-y0itay50------ba
101 0 $aeng
102   $aGB
105   $aa-------001yy
200 1 $aEcological effects of waste water$fE.B. Welch$gwith hydrographic characteristics by T. Lindell
210   $aCambridge$cCambridge University Press$dc1980
215   $aXII, 337 p.$cill.$d23 cm
610 0 $aIdrobiologia
700  1$aWelch,$bEugene B.$0511020
702  1$aLindell,$bTommy
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996   $aEcological effects of waste water$9768372
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