Here are entered comprehensive works on the basic engineering and industrial materials used in the construction of devices, apparatus, structures, equipment, etc. --subdivision Materials under scientific and technical disciplines and under types of equipment and construction, e.g. Electronics--Materials; and phrase headings for special types of materials, e.g. Building materials; Raw materials
Here are entered works on the community of interests created between armed services officials and manufacturers of military weapons and military supplies.
Here are entered works that discuss collectively those countries that are comparatively advanced in industrial capability, technological sophistication, and economic productivity.This heading may be subdivided by those topical subdivisions used under names of regions, countries, etc., e.g. Developed countries--Economic conditions, and may be used as a geographic subdivision under those topics authorized for local subdivision, e.g. Technology--Developed countries.
