61
Published: 1972
Superior document: Werke 21
62
63
Published: 1970
Superior document: Problems of the contemporary world 1,3
64
Published: 1970
Superior document: Bibliotheca historica Romaniae : Studies 31
65
Published: 1977
66
Published: 1971
Superior document: Posebna izdanja / Srpska Akademija Nauka i Umetnosti 442
67
Published: 1971