Deals mainly with the subject indexing of law books which are produced primarily for the use of the legal profession and law students. Vocabulary is specially important to lawyers, for whom definitions of words are vital. Lawyers′ own terms, many of which are phrasal, must be used in indexes, although different works may require different approaches. The use of the words law and legal is examined, as are the order of words in headings, the use of prepositions and singular or plural forms. Specific rather than classified indexing is normally preferred. Advice is offered in relation to the indexing of references to legal matters in general books and in books on particular aspects of law for the layman.