Kennedy, W. K.
Human and animal-powered water-lifting devices / W. K. Kennedy and T. A. Rogers. - London : Intermediate Technology Publications, 1985. - ii, 111 p. : ill.
Water-wheels.
Hand pumps.
Pumping machinery.
Human and animal-powered water-lifting devices / W. K. Kennedy and T. A. Rogers. - London : Intermediate Technology Publications, 1985. - ii, 111 p. : ill.
Water-wheels.
Hand pumps.
Pumping machinery.