"2008-11-19" . . . "DataSets/DataSet/Units/Unit/Associations/UnitAssociation/AssociatedUnitSourceInstitutionCode + DataSets/DataSet/Units/Unit/Associations/UnitAssociation/AssociatedUnitSourceName + DataSets/DataSet/Units/Unit/Associations/UnitAssociation/AssociatedUnitID" . "Associated Occurrences" . . "A list (concatenated and separated) of identifiers of other Occurrence records and their associations to this Occurrence." . "The recommended best practice is to separate the values with a vertical bar (' | ')." . "recommended" . "2014-10-23" . . . .