Index bibliographicus.
Contributors: International Federation for Documentation.
Edition: 4th ed.
Publisher: Federation Internationale de documentation
Published: 1955
Place of publication: La Haye
Language: eng
Subjects: Abstracting and indexing services -- Directories.; Bibliographical services -- Directories.
Genres: Directories.
Notes: "... systematically arranged directory of currently published abstracting and bibliographic services for retracing literature in a certain field ..."

English and French.
Table of contents: value: v. 1. Science and technology.; value: v. 2. Social sciences.