-
481.
Retail stores
Subjects
Retail tradeCommercial buildings
-
482.
Rings
Subjects
Jewerly
-
483.
Robotics in medicine
Subjects
Robotics
-
484.
Robots
Subjects
Robotics
-
485.
Roofs
Subjects
Structural framesGirdersBuildingBuilding, Iron and steelTrussesCarpentry
-
486.
Rope
Subjects
Textile fibers
-
487.
Ropework
Subjects
Handicraft
-
488.
Rubber industry and trade
Subjects
-
489.
Sailors
Subjects
Naval art and science
-
490.
Sales management
Subjects
Industrial managementSelling
-
491.
Sales personnel
Subjects
Commercial agentsRetail tradeAdvertising
-
492.
Sawmills
Subjects
Mills
-
493.
Scaffolding
Subjects
Temporary buildings
-
494.
Scalextric toys
Subjects
Automobiles
-
495.
School buildings
Subjects
School facilities
-
496.
Screens
Subjects
Interior decoration
-
497.
Sectors econòmics
Subjects
Economics
-
498.
Self-help housing
Subjects
Dwellings
-
499.
Service industries
Subjects
Sectors econòmics
-
500.
Sewing
Subjects
Home economics
-
501.
Sex role in mass media
Subjects
Mass media
-
502.
Shipping conferences
Subjects
Steamboat linesMonopoliesOcean travelMaritime transportIndustrial trusts
-
503.
Shipwrecks
Subjects
Marine accidentsAdventure and adventurersDisasters
-
504.
Shoes
Subjects
Footwear
Last updated dated: 21/02/2026