An Unexpurgated History of the Universe was a book that Sarah Jane Smith read on 13 July 1964. Andrea told Sarah Jane that the book was uninteresting but that she wished that she would get as good marks as Sarah Jane. When Sarah Jane told Andrea that she was so good because she was reading such books as An Unexpurgated History of the Universe, Andrea told her this price was too high for good marks. (PROSE: Whatever Happened to Sarah Jane?)

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