00358nam a22000737a 4500008004100000245017600041250004300217264002400260220606s1965    ru ||||| |||| 00| 0 eng d  aInternational Association for Hydraulic Research : eleventh congress. Vol. 3. Unsteady flow in open channels /cInternational Association for Hydraulic Research. Congress.  aVol. 3. Unsteady flow in open channels  aLeningrad : c1965.