PACHUR, H.-J. & BRAUN, G.: Drainage systems, lakes and ergs in the Eastern Sahara as indicators of Quaternary climatic dynamics . . . 3 ; ISSAR, A. & GILEAD, I.: Pleistocene climates and hydrology of the Negev (Israel) and Sinai (Egypt) deserts . . . 17 ; MACUMBER, P. G.: Re-adjustment in regional groundwater equilibria, southern Murray Basin, S.E. Australia . . . 26 ; VAHRSON, W.-G.: Some aspects of soil -physical investigations in the Western Desert of Egypt . . . 43 ; VAHRSON, W.-G., BLUME, H.P. & ALAILY, F.: Simulation of episodic rainfalls in the Western Desert of Egypt . . . 55 ; ALAILY, F.: Indicators of recent and subrecent soil moisture in the full arid part of the Sahara . . . 68 ; WRIGHT, E. P.: Review of the hydrogeology of the Kufra Basin, North Africa . . . 76 ; THORWEIHE, U.: Isotopic identification and mass balance of the Nubian Aquifer System in Egypt . . . 87 ; BLINDOW, N. & THYSSEN, F.: Continuous profiling of groundwater elevations by EMR method (electromagnetic reflection) in Southern Egypt . . . 98 ; MENENTI, M.: Evaporation of groundwater in the Sahara: regional character and application of satellite data . . . 109 ; SONNTAG, C: A time-dependent groundwater model for the Eastern Sahara . . . 124 ; BRINKMANN, P.-J. & HEINL, M. : Numerical ground water model . . . 135 ; HOLLÄNDER, R.: Influence of diffusive-convective effects on radiocarbon age-dating of Western Desert groundwater . . . 156 ;