http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Guide for interpretation of nondestructive tests of ordinary-, medium-, and high-strength, low-alloy steel weldments in ship hull structures
final technical report on project SR-197
prepared for the Ship Structure Committee by the Weld Flaw Evaluation Committee of the Ship Research Committee, National Academy of Sciences, National Research Council.