02238oam 2200625Ka 450 991071293580332120180924051243.8GOVPUB-C13-14a713beb9825ed6dcc7db8614336d0f(CKB)5470000002498836(OCoLC)680891369(OCoLC)646953682(OCoLC)995470000002498836(EXLCZ)99547000000249883620101111d1980 ua 0engurbn||||||abpurbn||||||adatxtrdacontentcrdamediacrrdacarrierA Study of lumber used for bracing trenches in the United States report to Occupational Safety and Health Administration, Department of Labor, Washington, D.C. 20210 /Lawrence I. Knab [and others]Washington, D.C. :U.S. Dept. of Commerce, National Bureau of Standards :For sale by the Supt. of Docs., U.S. G.P.O.,[1980]1 online resource (218 pages in various pagings) illustrationsNBS building science series ;122Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes."Issued March 1980."Includes bibliographical references.Study of lumber used for bracing trenches in the United States ExcavationLumberRetaining wallsMaterialsUnited StatesExcavationfastLumberfastRetaining wallsMaterialsfastUnited StatesfastExcavation.Lumber.Retaining wallsMaterialsExcavation.Lumber.Retaining wallsMaterials.690/.02/18 s624.1/52Knab Lawrence I1393543United States.National Bureau of Standards.OCLCEOCLCEOCLCQOCLCFOCLCQOCLCOOCLCQBOOK9910712935803321A Study of lumber used for bracing trenches in the United States3533885UNINA