Classification. Class P, subclasses P-PM supplement Index to languages and dialects.

Dades bibliogràfiques
Autor corporatiu: U. S. Library of Congress. Subject Cataloging Division, Library of Congress. Classification Division
Format: Llibre
Idioma:English
Publicat: Washington [U. S. Government Printing Office] 1957.
Edició:Second edition.
Matèries: