Color filmstrips and slide sets of the United States Department of Agriculture.

Cover title.

Summary of reservoir sediment deposition surveys made in the United States through 1965 /

"In cooperation with Committee on Sedimentation Water Resources Council."

Central swine-testing and purebred-improvement programs in the United States /

Cover title.

Summary of reservoir sediment deposition surveys made in the United States through 1970 /

"Prepared for publication by the Agricultural Research Service, Dept. of Agriculture, under the auspices of the Sedimentation Committee, Water Resources Council, acting in behalf of the following participating agencies: Dept. of Agriculture ... [et al.]."