-
865.
Recreational boats
Subjects
Boats and boating
-
866.
Recrystallization (Metallurgy)
Subjects
Heat treatment of metals
-
867.
Refrigerants
Subjects
Industrial chemistry
-
868.
Reinforced concrete constructions
Subjects
Reinforced concrete
-
869.
Reliability (Engineering)
Subjects
EngineeringSystems engineeringProbabilities
-
870.
Remote control
Subjects
Electric apparatus and appliances
-
871.
remote control vehicles Vehicles remotely piloted
Subjects
Vehicles
-
872.
Renewable energy sources
Subjects
Power resourcesRenewable natural resources
-
873.
Repair kits (Bicycle)
Genre/Form
Equipment
-
874.
Repairing
Subjects
-
875.
Repoussé work
Subjects
Metals finishingMetal-work
-
876.
Requirements engineering
Subjects
Engineering
-
877.
Research parks
Subjects
Industrial districts
-
878.
Resonators
Subjects
Audio equipment
-
879.
Retaining walls
Subjects
Hydraulic engineering
-
880.
Rifles
Subjects
Firearms
-
881.
Rivers
Subjects
RunoffNatural areas
-
882.
Road maps
Genre/Form
Maps
-
883.
Roads
Subjects
CommunicationsCivil engineeringTransportationRoad networks
-
884.
Robot programming
Subjects
Computer programming
-
885.
Robotics
Subjects
Cybernetics
-
886.
Robust control
Subjects
Automatic control
-
887.
Rocket engines
Subjects
Jet propulsion
-
888.
Rockets (Aeronautics
Subjects
Projectiles
Last updated dated: 05/07/2025