. . . . . . . . "Surface-water-quality assessment of the lower Kansas River Basin, Kansas and Nebraska selected metals, arsenic, and phosphorus in streambed sediments of first-and second-order streams, 1987"@en . . . . . . . "Surface-water-quality assessment of the lower Kansas River Basin, Kansas and Nebraska : selected metals, arsenic, and phosphorus in streambed sediments of first-and second-order streams, 1987"@en . . . . .