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The Germanic Languages

by Ekkehard Konig and Johan Van Der Auwera

- a good introduction to the Germanic languages containing information about the history, phonology, morphology, syntax, lexiography and dialects of Gothic, Icelandic, Faroese, Norwegian, Swedish, Danish, German, Yiddish, Pennsylvania German, Dutch, Afrikaans, Frisian, English and Germanic Creoles

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A Comparative Germanic Grammar

by Eduard Prokosch

- provides a comprehensive introduction to the phonology and morphology of the Germanic languages. It is accessible yet thorough.

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Old English and Its Closest Relatives: A Survey of the Earliest Germanic Languages

by Orrin W. Robinson

- an interesting introduction to Gothic, Old Norse, Old English, Old Saxon, Old High German, Old Low Franconian and Old Frisian with example texts and historical background to each language.

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History of the German Language: With Special Reference to the Cultural and Social Forces That Shaped the Standard Literary Language

by Gunhild Prowe and Jill Schneider (Editors)

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