classification schedule การใช้

Other cataloging rules and classification schedules can also be used.
The library uses the American LC Classification Schedule, and by using the complete shelf system, library users are able to seek information themselves.
The Dewey Decimal Classification, the Library of Congress Classification, and the Universal Decimal Classification all make use of facets at various points in their enumerated classification schedules.
Do they continue to shelf the books based on the originally-assigned classifications, even though changes in the classification schedule would have given some books different classifications?
They were considered obsolete by the SAR and were excluded from the classification schedules, but were renumbered by having the numeral " 0 " prefixed to their existing numbers.