DATABASE GUIDE - National Technical Information Service

NTIS Subject Categories - Alphabetical Listing by Major Categories3779‐Ordnance790‐General79A‐Ammunition, Explosives, & Pyrotechnics79B‐Armor79C‐Bombs79D‐Combat Vehicles79E‐Detonations, Explosion Effects, & Ballistics79F‐Fire Control & Bombing Systems79G‐Guns79H‐Rockets79I‐Underwater Ordnance82‐Photography & Recording Devices820‐General82A‐Holography82B‐Photographic Techniques & Equipment82C‐Recording Devices46‐Physics460‐General46A‐Acoustics46B‐Fluid Mechanics46C‐Optics & Lasers46D‐Solid State Physics46E‐Structural Mechanics46G‐Plasma Physics46H‐Radiofrequency Waves85‐Transportation850‐General85A‐Air Transportation85C‐Metropolitan Rail Transportation85D‐Transportation Safety85E‐Pipeline Transportation85F‐Global Navigation Systems85G‐Marine & Waterway Transportation85H‐Road Transportation85I‐Railroad Transportation91‐Urban & Regional Technology& Development910‐General91A‐Environmental Management & Planning91B‐Transportation & Traffic Planning91C‐Fire Services, Law Enforcement,& Criminal Justice91D‐Communications91E‐Housing91F‐Health Services91G‐Urban Administration & Planning91H‐Regional Administration & Planning91I‐Emergency Services & Planning91J‐Economic Studies91K‐Social Services91L‐Recreation43‐Problem‐Solving Informationfor State & Local Governments430‐General43A‐Finance43B‐Economic & Community Development43C‐Human Resources43D‐Police, Fire, & Emergency Services43E‐Energy43F‐Environment43G‐Transportation84‐Space Technology840‐General84A‐Astronautics84B‐Extraterrestrial Exploration84C‐Manned Spacecraft84D‐Spacecraft Trajectories & Flight Mechanics84E‐Space Launch Vehicles & Support Equipment84F‐Space Safety84G‐Unmanned Spacecraft37