This issue, which completes Volume 6, contains the following papers and the biographies of the contributing authors: 

-- V.G.Chant, "Two Global Scenarios: The Evolution of Energy Use and the Economy to 2030"; 

-- J.C. Stone et al., "Water Demand for Generating Electricity"; 

-- Z. Kos, "Stochastic Supplementary Irrigation Water Requirements in Water Resources Systems".