F. R. France. Mi Paris,
«Evaluation des quantites d'eau necessaires aux irrigations». France, Ministere de la Cooperation, Paris, France, p. 204 p.: fig., tab., 1979.
R. Prasad,
«Report on rainwater harvesting in India and Middle East». Indian Institute of Science, Department of Civil Engineering, Bangalore, India, p. 80 p. + annex : drwngs., fig., maps, 1979.