. . "The orifice as a means of measuring flow of water through a pipe"@en . . . . . . . . . . . . . . "The orifice as a maens of measuring flow of water through a pipe" . . . . "The Orifice as a Means of Measuring Flow of Water through a Pipe. [With plates.]"@en . . "The orifice as a means of measuring flow of water through a pipe" .