-
793.
Pilotage
Subjects
Maritime contractsHarbors
-
794.
Pipe
Subjects
Hydraulic structuresTransportation
-
795.
Pistols
Subjects
WeaponsFirearms
-
796.
Plant biotechnology
Subjects
Agricultural biotechnology
-
797.
Plastics industry
Subjects
Chemical industry
-
798.
Plates (Engineering)
Subjects
Structural analysis (Engineering)
-
799.
Plating
Subjects
-
800.
Plows
Subjects
Agricultural instrumentsAgricultural machinery
-
801.
Plumbing
Subjects
Environmental engineering (Buildings)
-
802.
Pneumatic control
Subjects
Automatic control
-
803.
Pneumatic machinery
Subjects
Compressed airPneumatics
-
804.
Polikarpov aircraft
Subjects
Fighter planes
-
805.
Polil (Trademark)
Subjects
Trademarks
-
806.
Pollution
Subjects
Effect of human beings on naturePublic health
-
807.
Popular (Trademark)
Subjects
Trademarks
-
808.
Portable computers
Subjects
Mobile computingMicrocomputers
-
809.
Postharvest technology
Subjects
-
810.
Powder metallurgy
Subjects
-
811.
Power electronics
Subjects
ElectronicsElectric power
-
812.
Power resources
Subjects
Natural resources
-
813.
Power windows
Subjects
-
814.
Power-plants
Subjects
-
815.
Predictive control
Subjects
Automatic control
-
816.
Preservation of materials
Subjects
Materials
Last updated dated: 21/02/2026