Journal of Hydrology. Vol. 30 No. 1,2 (1976).

It contains of Papers, Book Reviews and Notes on May 1976 in Vol. 30 No. 1,2.

Research papers : Solution of the Boussinesq equation by a finite-element method / C. Tzimopolous. A pseudo steady-state solution of water movement in the unsaturated zone of the soil / P. J. M. de Last. The drawdown near an abstraction well of large diameter under non-steady conditions in an unconfined aquifer / N. S. Boulton and T. D. Streltsova. Distributed parameter identification of groundwater systems by nonlinear estimation / H. L. Garay, Y. Y. Haimes and P. Das. Linear and nonlinear approaches for short-term runoff estimations in time-invariant open hydrologic systems / Z. G. Papazafiriou. Entropy principle applied to the rainfall-runoff process / J. O. Sonuga. A method of finding the family of runhydrographs for given return periods / L. A. V. Hiemstra, W. S. Zucchini and G. G. S. Pegram. Peak flow inter-arrival times / M. G. Anderson. A study of dispersive properties of an aquifer medium at the scale of samples / F. Brissaud, Ph. Couchat and C. Escande. Seepage flow through homogeneous soil into a row of drain pipes / A. D. Sneyd and R. J. Hosking. Derivation of time of concentration / V. P. Singh. Conformity of groundwater recharge rate by tritium method and methamatical modeling / B. S. Sukhija and C. R. Shah. Water tracing in tropical regions the use of flurometric techniques in Jamaica / P. L. Smart and D. I. Smith. Book reviews : Simulation of Nitrogen Behavior in Soils by J. Beek and M. J. Frissel / W. H. van de Molen. Simulation of accumulation and leaching in soils by M. J. Frissel and P. Reiniger / W. H. van de Molen. Environmental isotope data No. 5 : world survey of isotope concentration in precipitation (1970 - 1971) (IAEA Technical Report) / E. Gaspar.