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If your book would not require LCSH headings, for example if it is a work of literature by an individual author, FAST should not be applied. However, LTS is no longer relying on keywords for subject access: even if your book's title says exactly what the book is about, in English, you still need to apply FAST headings.
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Guidelines for Added Entries
You may assign added entries (7xx fields) if failure to do so would seriously impair access to the item. If necessary, assign up to two 7xx fields to cover the primary relationships associated with an item (e.g. an editor's name, the corporate sponsor of a symposium) or to bring out title access information judged to be important.
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LTS Statistics Code for Minimal Level Records
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