Below you will find the solution for: This system invented in the 1870s to classify library books is now in its 23rd updated edition Jeopardy .
Since you already solved the question This system invented in the 1870s to classify library books is now in its 23rd updated edition which had the answer DEWEY DECIMAL, you can simply go back at the main post to check the other answers. You can do so by clicking the link here Jeopardy June 21 2023
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