Universal Decimal Classificationhttps://vocabularyserver.com/udc/en/MAIN TABLEShttps://vocabularyserver.com/udc/en/?tema=652COMMON AUXILIARY NUMBERShttps://vocabularyserver.com/udc/en/?tema=10COMMON AUXILIARY SIGNShttps://vocabularyserver.com/udc/en/?tema=2AUXILIARY TABLEShttps://vocabularyserver.com/udc/en/?tema=1Archaeology. Prehistory. Cultural remains. Area studieshttps://vocabularyserver.com/udc/en/?tema=2456Biographical studies. Genealogy. Heraldry. Flagshttps://vocabularyserver.com/udc/en/?tema=2443General historyhttps://vocabularyserver.com/udc/en/?tema=2455History of civilization. Cultural historyhttps://vocabularyserver.com/udc/en/?tema=2454Archivistics. Archives (including public and other records)https://vocabularyserver.com/udc/en/?tema=2453Methodology of history. Ancillary historical scienceshttps://vocabularyserver.com/udc/en/?tema=2452History as a sciencehttps://vocabularyserver.com/udc/en/?tema=2451Science of history. Historiographyhttps://vocabularyserver.com/udc/en/?tema=2450Historyhttps://vocabularyserver.com/udc/en/?tema=2449Flags. Standards. Bannershttps://vocabularyserver.com/udc/en/?tema=2448Area studies. Study of a localityhttps://vocabularyserver.com/udc/en/?tema=2460Nobility. Titles. Peeragehttps://vocabularyserver.com/udc/en/?tema=2447Cultural remains of historical timeshttps://vocabularyserver.com/udc/en/?tema=2459Heraldryhttps://vocabularyserver.com/udc/en/?tema=2446Prehistory. Prehistoric remains, artefacts, antiquitieshttps://vocabularyserver.com/udc/en/?tema=2458Genealogyhttps://vocabularyserver.com/udc/en/?tema=2445Archaeologyhttps://vocabularyserver.com/udc/en/?tema=2457Biographical studieshttps://vocabularyserver.com/udc/en/?tema=2444Exploration of particular geographical featureshttps://vocabularyserver.com/udc/en/?tema=2430Regional geographyhttps://vocabularyserver.com/udc/en/?tema=2442Kinds and techniques of geographical explorationhttps://vocabularyserver.com/udc/en/?tema=2429Nonliterary, nontextual representations of a regionhttps://vocabularyserver.com/udc/en/?tema=2441Science of geography. Methodology (theory, systems, methods)https://vocabularyserver.com/udc/en/?tema=2428Applied, practical geographyhttps://vocabularyserver.com/udc/en/?tema=2440General questions. Geography as a science. Exploration. Travelhttps://vocabularyserver.com/udc/en/?tema=2427Normative geographyhttps://vocabularyserver.com/udc/en/?tema=2439