found: Invisible languages, 2015:t.p. (Nils Langer; ed) back cover (Nils Langer is Prof. of Germanic Linguistics at the Univ. of Bristol. Born and raised in Schleswig-Holstein, he studied German and English linguistics at the Univ. of Newcastle upon Tyne, where he completed his PhD on the effectiveness of seventeenth-century German grammarians. He researches a broad range of topics in historical sociolinguistics and currently works on language contact phenomena and language politics in the German-Danish borderlands)
