At head of title: Commission of the European Communities.
"Consists of four monolingual volumes (German, English, French and Italian) and a quadrilingual index."
Bibliography of sources consulted appears in each of the four monolingual vols.
Includes indexes.
1. Deutsche Ausgabe.--2. English edition.--3. Version française.--4. Edizione italiana.--5. Viersprachiges Register und Mikrofiches = Quadrilingual index and microfiches