Journal of Hydrology. Vol. 19 No. 2 (1973). 

 - Amsterdam : North-Holland Publishing Company.  [date of publication not identified] 
 - p. 
<br/><br/> It contains of Papers, Book Reviews and Notes on June 1973 in Vol. 19 No. 2. 
<br/><br/>A mathematical model to aid management of outflow from the Okavango swamp, Botswana / I. P. G. Hutchinson and D. C. Midgley. Flow toward periodic tile drains / I. Gyuk, A. Soriano and G. M. Karadi. The environmental tritium concentration of underground water and its hydrological interpretation / G. B. Allison and J. W. Holmes. Effects of heated water discharge on the evaporation from a river surface / J. Jaworski. The influence of delayed drainage on data from pumping tests in unconfined aquifers / N. S. Boulton. Dependence in the two stream problem / N. S. Barnett and R. M. Phatarfod. Discussion : hydrological investigation of the magnesian limestone of southeast Durham, England - a discussion / W. P. Balleau.