Journal of Hydrology. Vol. 25 No. 1,2 (1975).

It contains of Papers, Book Reviews and Notes on April 1975 in Vol. 25 No. 1,2.

The relevance of aquifer flow mechanisms to exploration and development of groundwater resources / M. J. Reeves and W. B. Wilkinson. Isotopic composition of groundwater in semi-arid regions of southern Africa / J. C. Vogel and H. van Urk. Welsh floodplain studies : the nature of floodplain geometry / J. Lewin and M. M. M. Manton. Digital simulation model of aquifer response to stream stage fluctuation / M. A. Marino. Dispersion effect of buoyancy-driven convection in stratified flows through porous media / J. E. Weber. Seasonal variability of rainwater redistribution by field soils / I. Reid. The Na'aman springs, northern Israel : salination mechanism of an irregular freshwater-seawater interface / A. Arad, U. Kafri. Investigation of vertical groundwater flow in boreholes / M. Bardhan. Optimal monthly operation of interconnected hydroelectric power storages / A. I. McKerchar. The chalk groundwater tritium anomaly - a possible explanation / S. S. D. Foster. Short communication : A note on the heat dispersion effect on thermal convection in a porous medium layer / H. Rubin. Book reviews : Symposium on advanced techniques in river basin management : the trent model research programme, Birmingham 1972 / R. T. Clarke. World climatology : an environmental approach by J. C. Lockwood / F. Dixey. Environmental remote sensing : applications and achievements by E. C. Barnett and L. F. Curtis / F. Dixey. Fluvial processes in instrumented watersheds : studies of small watersheds in the British Isles by K. J. Gregory and D. E. Walling / F. Dixey. The structure of Marine Ecosystems by J. H. Steele / S. J. de Groot. Recent publications. Notes.