01834oam 2200529 450 991071672490332120210830122720.0(CKB)5470000002524929(OCoLC)1159597629(EXLCZ)99547000000252492920200623d1937 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierIncreasing the strength of aluminum-alloy columns by prestressing /by M. Holt and E.C. HartmannWashington, [D.C.] :National Advisory Committee for Aeronautics,1937.1 online resource (7 pages, 5 unnumbered pages) illustrationsTechnical note / National Advisory Committee for Aeronautics ;No. 618"October 1937."No Federal Depository Library Program (FDLP) item number.Includes bibliographical reference (page 6).Aluminum alloysTestingColumnsTestingAeronauticsResearchAeronauticsResearchfastAluminum alloysTestingfastColumnsTestingfastAluminum alloysTesting.ColumnsTesting.AeronauticsResearch.AeronauticsResearch.Aluminum alloysTesting.ColumnsTesting.Holt M(Marshall),1395606Hartmann E. C.United States.National Advisory Committee for Aeronautics,TRAALTRAALOCLCOOCLCFGPOBOOK9910716724903321Increasing the strength of aluminum-alloy columns by prestressing3454405UNINA