00463nam a2200133Ia 4500008004100000020001800041040003800059100001800097245011000115250000800225260005100233300002000284653002500304211230s9999    xx            000 0 und d  a92 806 0051 6  cJayakar Knowledge Resource Centre  aBlack, Maggie 0aFrom handpumps to health: the evolution of water & sanitation programmes in bangladesh, india and nigeria  a1st  bUnited Nations Children's FundaNew Yorkc1990  a133p  p. ; 26cm  aPublic health - Asia