Sommerfeldt, Karl Ernst. Wörterbuch yur valeny und distribution der substantive / [Book :] Karl Ernst Sommerfeldt, H.Schreiber. - 1st ed. - Leipzig : Veb Bibliographisches institut, 1977. - 432 p ; 24 cm. Subjects--Topical Terms: German language--Dictionaries. Dewey Class. No.: 433