| Answer | Crossword Clue |
|---|---|
| ISBN | Card catalog abbr. |
| AUTH | Card catalog abbr. |
| ETAL | Catalog card abbr. |
| ETAL | Card catalog abbr. |
| AUTHORS | Card catalog names |
| AUTHOR | Card catalog datum |
| TITLES | Card-catalog section |
| ISBN | Card catalog ID |
| ONFILE | In a card catalog |
| UNION | Word with card or catalog |
