Journal of Hydrology. Vol. 20 No. 4 (1973). 

 - Amsterdam : North-Holland Publishing Company.  [date of publication not identified] 
 - p. 
<br/><br/> It contains of Papers, Book Reviews and Notes on August 1973 in Vol. 20 No. 4. 
<br/><br/>Mineral springs in the Suez Rift Valley - comparison with waters in the Jordan Rift Valley and postulation of a marine origin / E. Mazor, A. Nadler and M. Molcho. Numerical studies of two dimensional saturated / unsaturated drainage models / M. Todsen. Variables affecting well success in a Kentucky limestone aquifer / J. T. Johnson and J. Thrailkill. A note on the areal distribution of suspended sediment yield in South Africa / J. C. Doornkamp and P. D. Tyson. The forecasting of streamflow using the method of characteristic modes / E. D. Soulis and W. C. Lennox. A Synthetic model for daily stremaflow / N. M. D. Green. Book reviews. Cumulative author index volumes 15 - 20.