Enlace original:
https://openknowledge.worldbank.org/handle/10986/19811
Danilenko, Alexander
,
van den Berg, Caroline
,
Macheve, Berta
,
Moffitt, L. Joe
,
[ The IBNET Water Supply and Sanitation Blue Book 2014 : The International Benchmarking Network for Water and Sanitation Utilities Databook ]