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	1.	River ecology by Whitton, B. A ill Material type: Text; Format: print ; Literary form: Not fiction Publication details: Oxford ; 1975 Availability: No items available. Add to cart (remove)
	2.	River ecology by Whitton, B. A ill Material type: Text; Format: print ; Literary form: Not fiction Publication details: Oxford ; 1975 Availability: No items available. Add to cart (remove)
	3.	No cover image available No cover image available No cover image available Reservior limnology ecological perspectives by Thormton, Kent W [Author] Material type: Text Publication details: Philadelphia . : Blackwell. 1990 Availability: Items available for loan: Directorate of Library Services (UDSM) (1)Collection, call number: School of aquatic sciences and fisheries technology DASF QH96.T67 . Place hold Add to cart (remove)
	4.	No cover image available No cover image available No cover image available The biology of polluted waters by Hynes, H. B. N [Author] Material type: Text Publication details: London: Liverpool University Press, 1974 Availability: Items available for loan: Directorate of Library Services (UDSM) (5)Collection, call number: Science and Engineering Collection QH545.W3H96, ... Place hold Add to cart (remove)
	5.	No cover image available No cover image available No cover image available Stream sanitation by Phelps, Earle B [Author] James B. Lackey [Corporates Author] Material type: Text Publication details: London : John Wiley and Sons , 1944 Availability: Items available for loan: Directorate of Library Services (UDSM) (1)Collection, call number: Science and Engineering Collection TD433.P47 1944. Place hold Add to cart (remove)