D. Stanley,
“The Arusha windmill : a construction manual”. Volunteers in Technical Assistance, Arlington, VA, USA, p. 58 p. : fig. photogr., tab., 1977.
N. C. Thanh, Pescod, M. B., and Venkitachalam, T. H.,
“Design of simple and inexpensive pumps for village water supply systems”, vol. no. 67. Asian Institute of Technology, Bangkok, Thailand, p. iii, 41 p. : fig., tab., 1977.
IRC International Water and Sanitation Centre, The Hague, NL,
“International workshop on hand pumps for water supply, Voorburg (The Hague), The Netherlands, 12-16 July 1976 : report”, vol. no. 8. IRC, The Hague, The Netherlands, p. 30 p. : photogr., 1977.
A. Benamour,
“Moyens d'exhaure en milieu rural”. Comite Interafricain d'Etudes Hydrauliques (CIEH), Ouagadougou, Burkina Faso, p. 71 p.: fig., tab., 1977.