Related Clues:
- Wk. that begins with "A-Bazouki"
- Letter-ending abbr.
- In the env.
- Definitive source for linguists: Abbr.
- Something in a ltr.
- Business-letter abbr.
- Large British ref. book
- It may be a copy of a ck.
- Multi-volume ref.
- Cover letter letters
- 20-volume ref. work
- Philologists' work, for short
- Word-lover's ref. book
- Major ref. set
- British ref. work