Biblio

L. C. A. Naegel, Real, J. G., and Mazaredo, A. M., “Designing a spiral pump for irrigation”, Waterlines, an international journal of water, sanitation and waste, pp. p. 30-31: 1 fig., photogr., 1991.

P. Loewe, Animal powered systems : an alternative approach to agricultural mechanization. Braunschweig, Germany: Vieweg, 1986, p. 60 p.: fig.

W. K. Kennedy and Rogers, A., Human and animal-powered water lifting devices. London, UK: IT Publications, 1985, p. ii, 111 p.: fig., tab.

M. Howes, “The potential for small-scale solar-powered irrigation in Pakistan”. Institute of Development Studies at the University of Sussex, Brighton, UK, p. vi, 41 p.: fig., tab., 1982.

VITA -Arlington, VA, US, “Overshot waterwheel : a design and construction manual”. Volunteers in Technical Assistance, Arlington, VA, USA, p. iv, 94 p.: fig., 1980.

W. G. Ovens, “A design manual for water wheels; with details for applications to pumping water for village use and driving small machinery”. Volunteers in Technical Assistance, Mt. Rainier, MD, USA, p. iii + 71 p. : 6 figs., 16 tabs. , 1975.

B. M. Eubanks, “The story of the pump, and its relatives”. Bernard M. Eubanks, Salem, OR, USA, p. vi, 185 p. : ills, techn. drwngs, 1971.