F. Ahmed,
“Design parameters for rural water supplies in Bangladesh : a thesis”. Bangladesh University of Engineering and Technology, Dhaka, Bangladesh, p. xi, 141 p.: fig., tab., 1981.
A. Benamour,
“Hydraulique villageoise et moyens d'exhaure”. Comite Interafricain d'Etudes Hydrauliques (CIEH), Ouagadougou, Burkina Faso, p. Various paging, circa 180 pp. : tab. fig. ref., 1981.
P. H. Water Reso City and Manila, P. H. Asia Found,
“Installation manual for cylinder pump”. University of San Carlos, Water Resources Center, Cebu, Philippines, p. 23, ((17)) p. of tech. drawings: fig., 1981.
WHO -Geneva, CH, World Health Organization, UNDP -New York, NY, US, and UNICEF -New York, NY, US,
“Journey for survival”. Dick Young Productions, New York, NY, USA, p. film (15 min.): 16 mm, 1981.