Why doesn the library use the Dewey Decimal system?
The Dewey Decimal system that many people are familiar with is good organizational system, but it does not meet the needs of an academic library with 1.7 million volumes. The Dewey Decimal numbers would have to be very, very long in order to be unique. The alpha-numeric Library of Congress system (combinations of letters and numbers) is used by almost every university library in the United States.