Baker Library has reserved the letter Z for handling of these non-
business and non-economic items. With the letter Z as a prefix, it em-
ploys the Library of Congress notation. Thus Z JK2408 relates to a book
on American state government, and Z QD31 to a book on general chemis-
try. By the use of this prefix, all the material in a given library of pre-
dominantly business or economic outlook may be brought under a single
notation system.
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