By: Carl Bielenberg and Hugh Allen
96 pages, Illus
The treadle irrigation pump is able to lift up to 7000 litres of water per hour using the power of the human body, and can be locally made at low cost in small-scale metalworking shops. Its acceptance in Bangladesh, where it was first developed in 1984 is extraordinary, with over 500,000 pumps estimated now to be in use.
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