※一部利用できない機能があります
Official U.S. time
- フォーマット:
- 電子ブック
- 言語:
- 英語
- 出版情報:
- National Institute of Standards and Technology, Physics Laboratory, Time and Frequency Division ;, 2000
類似資料:
| |
U.S. Dept. of Commerce, National Institute of Standards and Technology |
Federal Judicial Center |
U.S. Dept. of State |
U.S. Department of Education, National Center for Education Statistics, Institute of Education Sciences |