TY - BOOK AU - Casteleyn, J.A. AU - Groen, P. Van, coaut.Kolkman, P.A., coaut. TI - Air entrainment in siphons : results of tests in two scale -models and an attempt at extrapolation / J.A. Casteleyn , P-. Van Groen and P.A. Kolkman CY - Delft, [Holanda] : Delft Hydraulics Laboratory ER -