Text messages dig up pure water for Bangladesh's poor.
Opar
Alisa
A
D020261:Arsenic Poisoning / Q000517:prevention & control*; D001459:Bangladesh; D040421:Cell Phone; D016208:Databases, Factual; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000191:economics / Q000592:standards*
D014874:Water Pollutants, Chemical