| Answer | Crossword Clue |
|---|---|
| TEL | 10-digit no. |
| EXT | No. after a 10 digit number |
| ISBNS | 10-digit book IDs |
| ISBN | 10-digit book ID |
| ISBN | 10- or 13-digit ID |
| ISBN | 10-digit ID at Amazon.com |
| Answer | Crossword Clue |
|---|---|
| TEL | 10-digit no. |
| EXT | No. after a 10 digit number |
| ISBNS | 10-digit book IDs |
| ISBN | 10-digit book ID |
| ISBN | 10- or 13-digit ID |
| ISBN | 10-digit ID at Amazon.com |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.