Under 55 is classed information about all the earth sciences: geophysics, seismology, terrestrial thermodynamics, electricity and magnetism, geochemistry, geobiology, prospecting; physical and dynamical geology, including vulcanology, tectonics, glaciology, geomorphology and oceanography; meteorology, stratigraphy, palaeogeography; petrology and petrography; economic geology; and hydrology. Though economic geology is essentially the study of useful deposits, class 55 generally covers the pure aspects of all these subjects; the related applied sciences are classed mainly in the divisions of class 6.
BS 1000[55]-1982由英国标准学会 GB-BSI 发布于 1982-03-31,并于 1982-03-31 实施。
BS 1000[55]-1982 在中国标准分类中归属于: A14 图书馆、档案、文献与情报工作,在国际标准分类中归属于: 01.140.20 信息学。
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