-
409.
Ocean circulation
Subjects
Oceanography
-
410.
Ocean currents
Subjects
Ocean circulationPhysical geographyHydrographyNavigationOceanography
-
411.
Ocean waves
Subjects
-
412.
Ocean-atmosphere interaction
Subjects
Marine meteorologyOceanography
-
413.
Oceanographers
Subjects
Geophysicists
-
414.
Oceanography
Subjects
Marine sciences
-
415.
Oceans
Subjects
WaterNatural areas
-
416.
Offshore structures
Subjects
Hydraulic engineering
-
417.
Oil fields
Subjects
Mines and mineral resources
-
418.
Oil-shales
Subjects
Fossil fuelsSchists
-
419.
Oligocene
Subjects
Paleogene
-
420.
Ophiolites
Subjects
Igneous rocks
-
421.
Ordovician period
Subjects
Paleozoic period
-
422.
Ores
Subjects
Economic geologyMinerals
-
423.
Organic geochemistry
Subjects
GeochemistryOrganic chemistry
-
424.
Organic water pollutants
Subjects
PollutantsOrganic wastes
-
425.
Ornamentla rocks
Subjects
Decoration
-
426.
Orogeny
Subjects
Tectonics
-
427.
Otoliths
Subjects
-
428.
Oxide minerals
Subjects
Minerals
-
429.
Ozone layer
Subjects
StratosphereAtmospheric ozone
-
430.
Paleoanthropology
Subjects
Physical anthropologyPaleontology
-
431.
Paleobiogeography
Subjects
BiogeographyPaleontology
-
432.
Paleobiology
Subjects
Paleontology
Last updated dated: 21/02/2026