Linguistic Ecology and Language ContactRalph Ludwig, Steve Pagel, Peter Mühlhäusler · First published 2016Open the Tome
The History of the Popes, From the Close of the Middle Ages. Drawn From the Secret Archives of the Vatican and Other Original SourcesLudwig Pastor, Frederick Ignatius Antrobus, Ralph Francis Kerr · First published 2015Open the Tome
La Romania americana: procesos linguisticos en situaciones de contactoRalph Ludwig, Stefan Pfänder · First published 2002Open the Tome
Kreolsprachen zwischen Mündlichkeit und SchriftlichkeitRalph Ludwig · First published 1996Open the Tome
The history of the popes, from the close of the middle agesLudwig Pastor, Ralph Francis Kerr, Frederick Ignatius Antrobus · First published 1894Open the Tome
