2 letter combinations are more specific:
HA = Statistics & Statistical sources
HB = Economic theory, Demography, Business cycles
HC = Economic history & Economic conditions
HD = Industries, Land use, Labor
HE = Transportation & Communications industries
HF = Commerce, Business, Marketing, and Human resources
HG = Finance, Money, Bank, Credit, Investments and Insurance
HJ = Public finance (countries, regions, states, counties, cities & towns)
Listed below are the letters and titles of the main classes of the Library of Congress (LC) Classification. Click on any class to view an outline of its subclasses in an interactive PDF format. This list is based upon the Library of Congress Classification Outline.
