Historisch-etymologisches Wörterbuch der ober- und niedersorbischen Sprache /
Schuster-Šewc, H.(Heinz)
Bautzen : Domowina-Verlag,
1978-1989.
Issued in parts.
Vol. 19 has errata laid in.
Vol. 2-3, 7, 10, 12-15, 17-19, 24: cover title.
Bibliography: v. 1, p. [ix]-xxvi.
Sorbian languages