Serials
Tijdschriften
[Berlin]: Verlag Christian Grützmacher; 1966-1967
Each no. consists of 50 loose sheets in portfolio.
Issues 1-2, 13-15 published in 1966; issues 3 and 4 published in 1967.
Edited by Bernhard Höke (except for: 4, edited by Rochus Kowallek).