Library of Congress classification schedules combined with additions and changes through 1993:Class K, Subclass KF, Law of the United States / Rita Runchock and Kathleen Droste, editors;compiled from sources enumerated on verso. The MARC formats are standards for the representation and communication of bibliographic and related information in machine-readable form. Midwinter ALA MAC 2020 Meeting Agenda Bibliographic Framework Transition Initiative MARC Code Lists as Linked Data RDA in MARC - Summary of Additions [MARC en ESPA