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100 _aNauges, Celine
245 _aHow "natural" are natural monopolies in the water supply and sewerage sector?: case studies from developing and transition economies
_cby Celine Nauges and Caroline van den Berg
260 _aWashington, D.C.
_bWorld Bank
_c2007
300 _a38p.
440 _aPolicy research working paper; 4137
650 _aSewerage sector
650 _aWater supply
700 _aBerg, Caroline van den
999 _c294612
_d294612