Subclass AC - Collections. Series. Collected Works. Subclass AE - Encyclopedias. Subclass AG - Dictionaries and other general reference works. Subclass AI - Indexes. Subclass AM - Museums. Collectors and collecting. Subclass AN - Newspapers. Subclass AP - Periodicals. Subclass AS - Academies and learned societies. Subclass AY - Yearbooks. Almanacs. Directories. Subclass AZ - History of scholarship and learning. The humanities. |
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