"2013-03-28" . . . "An identifier for the MaterialSample (as opposed to a particular digital record of the material sample). In the absence of a persistent global unique identifier, construct one from a combination of identifiers in the record that will most closely make the materialSampleID globally unique."@en . "not in ABCD" . . . "Material Sample ID"@en . "2013-09-26" . . "recommended" . . .