TY - SER TI - Journal of Hydrology. Vol. 20 No. 3 (1973) PY - 0000///[date of publication not identified] CY - Amsterdam : North-Holland Publishing Company. N1 - It contains of Papers, Book Reviews and Notes on July 1973 in Vol. 20 No. 3; Review : hydrogeomorphology / A. E. Scheidegger. Research papers : Groundwater tracing with post sampling activation analysis / J. K. Schmotzer, W. A. Jester and R. R. Parizek. On the leakage assumption applied to equations of groundwater flow / T. D. Streltsova. A discrete space continuous time modeling approach to nonsteady flow in a leaky aquifer system of finite configuration / M. A. Marino and W. W-G. Yeh. Measurements of the downslope flow of water in a soil / D. R. Weyman ER -