Melvil Decimal System: 623.894
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Philosophy and Psychology
Mathematics and Science
Arts and Recreation
Biography and History
Agriculture & Animal Husbandry
Handicraft and Occupations
Mechanical Engineering and Machinery
Mining Engineering and Mines and Mineral Resources
Military Engineering and Marine Engineering
Road and Railroad
Technology of Weapons and Armaments
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Military Aviation; Military Wheeled & Tracked Vehicles; Related Technologies
Naval architecture; Shipbilding
History of Naval Architecture
Shipbuilders & Dockyards
Sails & Rigging
Inboard & Outboard Motors
Works under MDS 623.894
- Achievements: The Story of Lighthouses Lightships and Lifeboats by Olwen Reed
- The Red Rocks of Eddystone by Fred Majdalany
- The Lo-Tech Navigator by Tony Crowley
- The lighthouse keepers by Stuart Buchanan
- Lighthouse of tragedy : the story of Bustard Head Lighthouse, Queensland's first coast Light by Stuart Buchanan
- White towers: The Illawarra lighthouses, by Alexander Patrick Fleming
- Romance of Australian lighthouses by Valmai Phillips
- Jupiter lighthouse by Bessie Wilson DuBois
- Tidal stream atlas : the Channel Islands and adjacent coasts of France,including plan of Alderney and the Casquets: NP264 by Hydrographer
- International Marine Light List and Waypoint Guide (The): Maine to Texas Including the Bahamas by John J. Kettlewell
- The Inventions of Martha Coston: Signal Flares That Saved Sailors' Lives (Reading Power: 19th Century American Inventors) by Holly Cefrey
- The Eddystone Light by Fred Majdalany
- Understanding a nautical chart : a practical guide to safe navigation by Paul Boissier
- The White Queen: a history of the Split Point Lighthouse, Aireys Inlet, above the Eagles Nest Reef in Bass Strait, Victoria, Australia by Roger Vaughan Carr
- Signposts of the Sea by Althea
- A History of the Spurn Lighthouses by G de Boer
- Australian lighthouses by John Noble
- Reeds Marine Distance Tables 15th Edition by Miranda Delmar-Morgan
- Guiding Lights: Lighthouses by Peter Ashley
- Luci ed eclissi sul mare: fari d'Italia by Enrica Simonetti
- Southern Lights: The Scottish Contribution to New Zealand's Lighthouses by Guinevere Nalder
- Tide Tables 2008: East Coast of North and South America, Including Greenland (Tide Tables East Coast of North and South America) by NOAA
- Signi: Signs and Signals on Inland Waterways by United Nations
- Stanford's tidal atlas / Atlas des courants de maree : Central English Channel / La Manche zone centrale by Michael Reeve-Fowkes
- The Trinity House of Deptford, 1514-1660, (University of London. Historical studies) by G. G Harris
- Stanford's tidal atlas : English Channel east by Michael Reeve-Fowkes
- Beacons by the Sea: Stories of Australian Lighthouses by National Archives of Australia
- International Light, Shape and Sound Signals by D. A Moore
- The Cape Jaffa lighthouse story by McLaren Verne
- Lights of Cooloola by Marian Young
- Light of their lives : the fight to save Bustard Head Lightstation, Queensland's first coast light by Stuart Buchanan
- Tariff of lighthouse apparatus lanterns and towers constructed by Chance Brothers and Co., Limited, Lighthouse Works, near Birmingham
- Regional tide and tide current tables 1991. New York Harbor to Chesapeake Bay
- 2004 Tide Tables - High and Low Water Predictions
- New York lighthouses of the Greater New York harbor, Hudson River [&] Long Island / by Jim Crowley
- Tide tables, east coast of North and South America, including Greenland by National Ocean Survey.
MDS classes with significant recommendations overlap, excluding ones under the same top-level class.
What is MDS?
Melvil stands for "Melvil Decimal System," named after Melvil Dewey, the famous librarian. Melvil Dewey invented his Dewey Decimal System in 1876, and early versions of his system are in the public domain.
More recent editions of his system are in copyright, and the name "Dewey," "Dewey Decimal," "Dewey Decimal Classification" and "DDC" are registered trademarked by OCLC, who publish periodic revisions.
LibraryThing's MDS system is based on the classification work of libraries around the world, whose assignments are not copyrightable. MDS "scheduldes" (the words that describe the numbers) are user-added, and based on public domain editions of the system.
The Melvil Decimal System is NOT the Dewey Decimal System of today. Wordings, which are entered by members, can only come from public domain sources. The base system is the Free Decimal System, a public domain classification created by John Mark Ockerbloom. Where useful or necessary, wording comes from the 1922 edition of the Dewey Decimal System. Language and concepts may be changed to fit modern tastes, or to better describe books cataloged. Wordings may not come from in-copyright sources.