658. In the International Code of signals, what does a group of three letters indicates?

Comments (0)

There are no comments at the moment. If you found an error or think question is incorrect, tell everyone about it

Progress: 24% (23/94)?

Learning progress ?
651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675
27/57