- Author: Карл Маркс Фридрих Енгелс
- Language: Bulgarian
- Year: 1970
- Author: Карл Маркс Фридрих Енгелс
- Language: Bulgarian
- Year: 1970
- Author: И. В. Сталин
- Language: Bulgarian
- Year: 1949
- Author: И. В. Сталин
- Language: Bulgarian
- Year: 1949
- Author: И. В. Сталин
- Language: Bulgarian
- Year: 1949
- Author: И. В. Сталин
- Language: Bulgarian