DublinCorePackage

public DublinCorePackage DublinCorePackage { get; }

using (Metadata metadata = new Metadata(Constants.InputEpub))
{
    var root = metadata.GetRootPackage<EpubRootPackage>();

    if (root.DublinCorePackage != null)
    {
        Console.WriteLine(root.DublinCorePackage.Rights);
        Console.WriteLine(root.DublinCorePackage.Publisher);
        Console.WriteLine(root.DublinCorePackage.Title);
        Console.WriteLine(root.DublinCorePackage.Creator);
        Console.WriteLine(root.DublinCorePackage.Language);
        Console.WriteLine(root.DublinCorePackage.Date);

        // ...
    }
}