http://dewey.info/scheme/edition/e23/ en
623.892 Geonavigation
623.8929 Piloting in and pilot guides to specific marine harbors and shores
623.89291 Piloting in and pilot guides to specific areas, regions, places in general
http://dewey.info/scheme/edition/e22/ de
623.892 Terrestrische Navigation
623.8929 Lotsen in und Lotsenhandbücher zu einzelnen Seehäfen und Küsten
623.89291 Lotsen in und Lotsenhandbücher zu einzelnen Gebieten, Regionen, Orten im Allgemeinen
Dewey Decimal Classification
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