00425nam a2200133Ia 4500 20251229182349.0 251229s9999 xx 000 0 und d TD 424.3 .M33 McKethun, Kenneth. M. The practice of water pollution biology . Kenneth. M McKethun Washington D.C U.S Division of Technical Support Water- Pollution- United States. BK 498829 498829 0 0 0 0 EGERTONLIB EGERTONLIB GEN 2025-12-29 0 TD 424 3 M33 EGER201659 2025-12-29 18:23:49 2025-12-29 BK