1
2
Published: 1989
Superior document: Acta Univ. Wratisl 988
3
Published: 1972
Superior document: Werke 40
4
Published: 1972
Superior document: Werke Erg.-Bd. 1
5
Published: 1959
Superior document: Werke 12
6
Published: 1956
Superior document: Werke 3
7
Published: 1972
Superior document: Werke 25
8
Published: 1973
Superior document: Werke 38
9
10
11
Published: 1972
Superior document: Werke 1
12
Published: 1972
Superior document: Werke 15
13
Published: 1949
Superior document: Bücherei des Marxismus-Leninismus 4
14
Published: 1972
Superior document: Werke 27
15
16
Published: 1972
Superior document: Werke 39
17
Published: 1973
Superior document: Werke 14
18
Published: 1972
Superior document: Werke 18
19
20
Published: 1972
Superior document: Werke 3