Advice columns are in the 070's.
The Dewey decimal number for chemical elements is 546.8.
Shakespeare is the only author to have his own Dewey Decimal number.
The "Dewey Decimal System" is a way to categorize books in a library. The Dewey decimal number is a number assigned to each book so that books on similar topics are kept together.
I would guess the Dewey Decimal classification for a yearbook is 051, English language serials.