Clue: Twenty-volume ref. work

Answer: OED

Length: 3

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Similar Clues:

• Reference work (e.g. ATLAS with 5 letters)
• Geographical reference work (ATLAS with 5 letters)
• Words on an initial reference volume (ATO with 3 letters)
• Op ___ (in the work referenced) (CIT with 3 letters)
• Reference work: Abbr. (e.g. ENC with 3 letters)
• MSN reference work (ENCARTA with 7 letters)
• Reference work for modelists? (HOWTOSCALE with 10 letters)
• Self-referential, as a creative work (META with 4 letters)
• Refresher at work (if you have your own office) (NAP with 3 letters)
• Brit. reference work (OED with 3 letters)