| 其他書名 | Hearing Before the Subcommittee on Emerging Threats and Capabilities of the Committee on Armed Services, United States Senate, One Hundred Sixteenth Congress, First Session, March 12, 2019 |
| 出版 | U.S. Government Publishing Office, 2021 |
| URL | http://books.google.com.hk/books?id=jBjozgEACAAJ&hl=&source=gbs_api |