Journal of Hydrology. Vol. 46 No. 3,4 (1980). 

 - Amsterdam : Elsevier Scientific Publishing Company.  [date of publication not identified] 
 - p. 
<br/><br/> It contains of Papers, Book Reviews and Notes on April 1980 in Vol. 46 No. 3,4. 
<br/><br/>Research papers : Stochastic synthesis of hydrologic data based on concepts of pattern recognition, II. Application of natural watersheds / U. S. Panu and T. E. Unny. Stochastic synthesis of hydrologic data based on concepts of pattern recognition, III. Performance evaluation of the methodology / U. S. Panu and T. E. Unny. Adaptive Fourier analysis of periodic - stochastic hydrologic sequences / Z. Sen. Critical drought analysis of periodic - stochastic processes / Z. Sen. Regional drought and flood frequency analysis : theoretical consideration / Z. Sen. A non-Gaussian Markovian model for concurrent confined-unconfined zones in aquifer / K. Elango and K. Swaminathan. Simulation of the effects of transpiration losses from the unsaturated zone on seepage from soil slope / P. A. Kilpatrick. Effective and bankfull discharges of streams in the Yampa River Basin, Colorado and Wyoming / E. D. Andrews. Chemical and sediment mass transfer in the Godavari River basin in India / G. Bikashamaiah and V. Subramanian. The interpretation of tritium in the Chalk unsaturated zone / S. S. D. Foster and A. Smith-Carington. Effect of climate and temperature on the amount of HCO and H2 CO3 of groundwaters / H. J. Schoeller. Technical notes : Pyranine used as a fluorescent tracer in hydrology : pH effects in determination of its concentration / M. Launay, M. Tripier, J. Guizerix, M. L. Viriot and J. C. Andre. An automatic electrical resistance soil-moisture measuring system / T. H. L. Williams.