- Author: George Alexander Lensen
- Language: English
- Year: 1964
- Author: George Lensen
- Language: English
- Year: 1974
- Author: George Alexander Lensen
- Language: English
- Year: 1972
- Author: George Alexander Lensen
- Language: English
- Year: 1970
俄国向东方的扩张
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- Author: [美] 乔治·亚历山大·伦森(G.A.Lensen)编
- Language: Chinese
- Year: 1978
- Author: Jan Lensen
- Language: English
- Year: 2021
- Author: Lensen G.A.
- Language: French