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G HILL

Publications and source records attributed to G HILL.

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Methods of water-flow measurement applicable to Simulium control.

For the effective control of the Simuliidae-and for a variety of other public health activities-it is important to determine with reasonable accuracy the rate and volume of flow of the rivers and streams which they infest. The field worker requires for this purpose an instrument that is at once cheap and easy to handle. The author of this paper reviews a number of means and instruments available for water-flow measurement and devotes special attention to the Pitot tube, which is well suited to the conditions encountered in Simulium control schemes.

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