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| | Subject Category Guide |
 | | Construction and design of bridges, tunnels and dams; Reservoir engineering; dredging; Flood control; Waterway and coastal engineering; water supply systems; Highway and traffic engineering; Urban planning and renewal; Land surveying techniques. |
 | | For air cushioned ships such as hovercraft, See 13/06/01, Surface Effect Vehicles and Amphibious Vehicles. |
 | | For the fabrication and manufacturing of laminates, composite materials, textiles, plastics, rubber, elastomers, adhesives, seals, binders, ceramics, refractories, glass, refractory fibers, coatings, colorants or finishes, see the appropriate group in Field 11. |
| www.dtic.mil /dtic/subcatguide/mechanical.html (483 words) |
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