01093cam a2200301Ia 4500005712150MiAaHDL20071024000000.0m d cr bn ---auaua830629s1934 dcuaf b f000 0 eng dsdr-wu656516(OCoLC)9654124WIXWIXAGLOCLCQGZM1Ag84Te no.442P200A 1.36:442Yarnell, D. L.(David Leroy)Bridge piers as channel obstructions /by David L. Yarnell.Washington :U.S. Dept. of Agriculture,1934.52 p., 8 p. of plates :ill. ;23 cm.Technical bulletin / United States Department of Agriculture ;no. 442Cover title.Annotated references relating to bridge piers as channel obstructions: p. 26-31.Includes bibliographical references (p. 25-26).Mode of access: Internet.Hydrodynamics.BridgesFoundations and piersResearch.Channel obstructions.00571215020071024102508.020071024000000.020120815133207.02025-03-29T18:21:36Z2025-03-29T17:30:02ZSDR-WUUNKNOWNloader.pl-001-001BKsdr-wu656516wuSDRWUwu.89078519675WU656516WUWU20250329googlewu.890785196751934pdbibUS fed doc