URI
Notation
550
Caption
Ancillary sciences of geology etc.
Broader class
55  Earth Sciences. Geological sciences
Narrower classes
550.1Physiography
550.2Geoastronomy. Cosmogony
550.3Geophysics
550.4Geochemistry
550.7Geobiology. Geological actions of organisms
550.8Applied geology and geophysics. Geological prospecting and exploration. Interpretation of results
550.93Geochronology. Geological dating. Determination of absolute geological age