00389pam a2200109 a 4500020002000000041000500020082001300025100002500038245019000063260001700253300000900270  a9781843393108c  h  a614bWHO  aJohn Cameron,eEd. .  aValuing Water Valuing Livelihoods Guidance on Social Cost-bebefit Analhysis of Drinking-water interventions, with special reference to small Community Water Supplies hTextual Documents  bW.H.O.c2011  a248.