+ dbk:orgname (dbk:orgname) = dbk:orgname *
+ dbk:subtitle (dbk:subtitle) = dbk:subtitle *
+ dbk:title (dbk:title) = dbk:title *
+ dbk:orgname (dbk:orgname) = dbk:orgname *
+ dbk:subtitle (dbk:subtitle) = dbk:subtitle *
+ dbk:title (dbk:title) = dbk:title *