From handpumps to health : the evolution of water and sanitation programmes in Bangladesh, India and Nigeria (United Nations Children's Fund, New York, 1990)
Maggie Black 133 p. : ill. (some col.) ; 26 cm. a-bg--- a-ii--- f-nr--- AIY/MR
Keywords: Sanitary engineering- -- Nigeria; Sanitary engineering- -- Bangladesh; Sanitary engineering- -- India; Water-supply- -- Nigeria; Water-supply- -- Bangladesh; Water-supply- -- India