| 其他書名 | Hearing Before the Subcommittee on Cyber, Innovative Technologies, and Information Systems of the Committee on Armed Services, House of Representatives, One Hundred Seventeenth Congress, First Session, Hearing Held February 23, 2021 |
| 出版 | U.S. Government Publishing Office, 2021 |
| URL | http://books.google.com.hk/books?id=adXUzgEACAAJ&hl=&source=gbs_api |