TY - RPRT TI - Underwater Microscope for Measuring Spatial and Temporal Changes in Bed-Sediment Grain Size AU - David M. Rubin AU - Henry Chezar AU - Jodi N. Harney AU - David J. Topping AU - Theodore S. Melis AU - Christopher R. Sherwood PY - 2006 DO - 10.3133/ofr20061360 UR - https://pubs.usgs.gov/publication/ofr20061360 ID - ofr20061360 ER -