New Bible Dictionary publisher is IVP (as above) and the various editors are listed as Marshall I Howard (Ed), Millard A R (Ed), Packer J I (Ed), Wiseman D J (Ed). It is a single volume.
It is such a well known book that any Christian bookstore should know it, but since there are a lot of Bible dictionaries, it's good to be asked to clarify which one.
If you get no other book to help you in your knowledge of the Bible, get this dictionary. 
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It is such a well known book that any Christian bookstore should know it, but since there are a lot of Bible dictionaries, it's good to be asked to clarify which one.