- Author: Добровольский В.А.
- Language: Русский
- Year: 1968
- Author: Синярев Г.Б. Добровольский М.В.
- Language: Русский
- Year: 1955
- Author: Проф. В. А. Добровольский
- Language: Русский
- Year: 1936
- Author: Добровольский В.А.
- Language: Русский
- Year: 1981
- Author: Добровольский В.А.
- Language: Русский
- Year: 1980
- Author: Добровольский В.А.
- Language: Русский
- Year: 1974
- Author: Добровольский В.А.
- Language: Русский
- Year: 1968
- Author: Городникова Добровольский.
- Language: Русский
- Year: 1988