On the accuracy of bed-material sampling
By: by M. de Vries.
Contributors: Waterloopkundig Laboratorium (Delft, Netherlands)
Series: Publication -- no. 90.; Publication (Waterloopkundig Laboratorium (Delft, Netherlands)) -- no. 90.
Publisher: Delft Hydraulics Laboratory
Published: 1971
Place of publication: [Delft]
Language: eng
Number of pages: 11
Subjects: River sediments -- Sampling -- Mathematical models.
Notes: "Reprint from: Journal of Hydraulic Research, 8, (1970), no. 4."

"January 1971."

Includes bibliographical references (leaf 10).

In English and French.