JENSSEN, P. D. and VRÅLE. L.
(2003):
Greywater treatment in combined biofilter/constructed wetlands in cold climate .
In: WERNER et al. (eds.). Ecosan – closing the loop. Proc. 2nd int. symp. ecological sanitation, Lübeck Apr. 7-11. 2003, GTZ, Germany, pp:875-881.
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