Abstract:
Content of “documents” is current or historical, which allows no confusion. The object of document study is the text of documents, but not “documents” themselves as is commonly understood. “Classification” and “cataloging” as the two basic parts of catalog study are not to be misunderstood. A cataloged classification of books consists of general works and specific works, and the traditional practice of classifying books into specific classes and special classes should be given up. Edition study classifies editions into written editions, which are reclassified into handwritten, copied, and photooffset manuscripts, and printed editions, which are redivided into carved, typed, lithographic and blockprinted editions. All these will be rereclassified according to time region, subject and craftsmanship.
