. . . . . . . "DDI-Codebook is a more light-weight version of the standard, intended primarily to document simple survey data. Originally DTD-based, DDI-C is also available as an XML Schema." . "Data Documentation Initiative - Codebook" . . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCtpcftn7kbe6toJbOTDQaCcCssEFSWqt6J4rZ02w+TfY7/eIOgJZYOlpL6G3AzO2RNmVYWRPSlMiykaFuaRuBitvk1GKfGdprfZbvXwmeOxpqCTRBQX9EnFyQyd+Ra/ajfw/UsG8skeu1xnUEpnQbpgbQYc/fvhJNN0UwEc77mOwIDAQAB" . "M551jNbJVBrPlF5dWS3UaAV4EptN2sgEbxgUfninXx6eNiBKGlYCoD/VMyTOlFH5fs/FaNCq4Qg/wfzQhUliYaeIacleUxbHvQ91RDWJfWLkgJdcmRVtpPjSScZbLNksNzbNhtPY0Q9eSduxyIlaWsucuYAFYT8I2iV3/NwZDBk=" . . "2022-01-08T10:32:03.490+01:00"^^ . . . . . .