TY  - BOOK
AU  - Stapel, D.R.A.
AU  - Vries, M. de, coaut.
TI  - Experience with the mathematical model of the hydraulic net-work of Rijnland water board / D.R.A. Stapel and M. de Vrie-s
CY  - Delft, [Holanda] : Delft Hydraulics Laboratory
ER  -