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	1.	[Electron microscopy of extracellular polymeric substances in activated sludge]. [electronic resource] by Bleich, U Nehrkorn, A Producer: 19890911 In: Zentralblatt fur Hygiene und Umweltmedizin = International journal of hygiene and environmental medicine vol. 188 Availability: No items available. Save to lists Add to cart (remove)
	2.	[Bacteriologic and virologic hygienic studies on waste water ponds]. [electronic resource] by Bleich, U Kahlert, A Nehrkorn, A Producer: 19920610 In: Zentralblatt fur Hygiene und Umweltmedizin = International journal of hygiene and environmental medicine vol. 192 Availability: No items available. Save to lists Add to cart (remove)

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