-
889.
Rolling (Metallurgy)
Subjects
Metal-work
-
890.
Rolls-Royce automobile
Subjects
Automobiles
-
891.
Rope
Subjects
Textile fibers
-
892.
Rotameters
Subjects
Measuring instruments
-
893.
Routers (Computer networks)
Subjects
Internetworking (Telecommunication)Computer networks
-
894.
Safety appliances
Subjects
Industrial safety
-
895.
Sailboats
Subjects
Ships
-
896.
Sails
Subjects
Shipbuilding
-
897.
Saline water conversion
Subjects
Fresh waterSaline watersWater purification
-
898.
Salt
Subjects
Marine resources
-
899.
Sandwich construction
Subjects
Laminated materials
-
900.
Sanitary engineering
Subjects
BiotechnologyCivil engineeringPublic health
-
901.
Sanitary landfills
Subjects
Waste disposal sites
-
902.
Sanitation
Subjects
Environmental health
-
903.
Scalextric toys
Subjects
Automobiles
-
904.
School furniture
Subjects
School facilitiesFurniture
-
905.
Scientific satellites
Subjects
Artificial satellites
-
906.
Sculpture materials
Subjects
Artists' materials
-
907.
Sea-power
Subjects
Naval art and science
-
908.
Seaplanes
Subjects
AeronauticsAirplanes
-
909.
Security systems
Subjects
-
910.
Seismic prospecting
Subjects
Geophysical explorationSeismology
-
911.
Seismic reflection method
Subjects
Seismic prospecting
-
912.
Seismometers
Subjects
Measuring instrumentsSeismology
Last updated dated: 28/06/2025