-
9889.
Hydrocarbon reservoirs
Subjects
-
9890.
Hydrocarbons
Subjects
Organic compounds
-
9891.
Hydrochloric acid
Subjects
Inorganic acids
-
9892.
Hydrocolloids
Subjects
ColloidsGums and resins
-
9893.
Hydrocortisone
Subjects
Glucocorticoids
-
9894.
Hydrocyanic acid
Subjects
Inorganic acidsDisinfectants
-
9895.
Hydrodynamics
Subjects
Fluid dynamicsHydraulic engineeringMechanicsAnalytical mechanicsFluid mechanics
-
9896.
Hydroelectric power plants
Subjects
Electric power-plantsWater resources development
-
9897.
Hydroformylation
Subjects
Chemical reactions
-
9898.
Hydrogen
Subjects
Nonmetals
-
9899.
Hydrogen as fuel
Subjects
Fuel
-
9900.
Hydrogen bomb
Subjects
Nuclear weaponsBombs
-
9901.
Hydrogen bonding
Subjects
Molecular association
-
9902.
Hydrogen peroxide
Subjects
DisinfectantsPeroxides
-
9903.
Hydrogen-ion concentration
Subjects
-
9904.
Hydrogenation
Subjects
Chemical reactions
-
9905.
Hydrogeology
Subjects
Geology
-
9906.
Hydrographic surveying
Subjects
Surveying
-
9907.
Hydrography
Subjects
-
9908.
Hydrolases
Subjects
Enzymes
-
9909.
Hydrologic cycle
Subjects
Hydrology
-
9910.
Hydrology
Subjects
Earth sciences
-
9911.
Hydrolysis
Subjects
-
9912.
Hydrometallurgy
Subjects
Metallurgy
Last updated dated: 11/10/2025