Biblio

S. Smits, Atengdem, J. A., Darteh, B., Moriarty, P. B., van Koppen, B., Nyarko, K., Obuoubisa-Darko, A., Ofosu, E., Venot, J. - P., y Williams, T., «Multiple use water services in Ghana : scoping study». International Water Management Institute (IWMI), S.l., p. 73 p.; 5 fig.; 3 tab.; 13 photographs, 2011.

T. Williams, Moon, A., y Williams, M., «Food, environment and health : a guide for primary school teachers». World Health Organization (WHO), Geneva, Switzerland, p. xix, 129 p.: ill., 1990.