Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Schaltungsanordnung fuer Fernsprechanlagen mit Selbstbelastungseinrichtungen an den Sprechstellen und die Hoehe einer vorbereiteten Selbstbelastung feststellenden Einrichtungen in der Vermittlungsstelle
Minority Languages Today. A Selection from Papers Read at the First Conference on Minority Languages Held at Glasgow University from 8 to 13 September 1980