> Isic::Entity.new("0891").classify
{
  :section => { :code => "B", :description => "Mining and quarrying" },
  :division => { :code => "08", :description => "Other mining and quarrying" },
  :group => { :code => "089", :description => "Mining and quarrying n.e.c." },
  :class => { :code => "0891", :description => "Mining of chemical and fertilizer minerals" }
}

> Isic.sections
[
  {:code=>"A", :description=>"Agriculture, forestry and fishing"},
  {:code=>"B", :description=>"Mining and quarrying"},
  {:code=>"C", :description=>"Manufacturing"}
  {:code=>"D", :description=>"Electricity, gas, steam and air conditioning supply"},
  {:code=>"E", :description=>"Water supply; sewerage, waste management and remediation activities"},
  {:code=>"F", :description=>"Construction"},
  {:code=>"G", :description=>"Wholesale and retail trade; repair of motor vehicles and motorcycles"},
  {:code=>"H", :description=>"Transportation and storage"},
  {:code=>"I", :description=>"Accommodation and food service activities"},
  {:code=>"J", :description=>"Information and communication"},
  {:code=>"K", :description=>"Financial and insurance activities"},
  {:code=>"L", :description=>"Real estate activities"},
  {:code=>"M", :description=>"Professional, scientific and technical activities"},
  {:code=>"N", :description=>"Administrative and support service activities"},
  {:code=>"O", :description=>"Public administration and defence; compulsory social security"},
  {:code=>"P", :description=>"Education"}, {:code=>"Q", :description=>"Human health and social work activities"},
  {:code=>"R", :description=>"Arts, entertainment and recreation"},
  {:code=>"S", :description=>"Other service activities"},
  {:code=>"T", :description=>"Activities of households as employers; undifferentiated goods- and services-producing activities of households for own use"},
  {:code=>"U", :description=>"Activities of extraterritorial organizations and bodies"}
]

> Isic.divisions(section: "B")
[
  {:code=>"05", :description=>"Mining of coal and lignite"},
  {:code=>"06", :description=>"Extraction of crude petroleum and natural gas"},
  {:code=>"07", :description=>"Mining of metal ores"},
  {:code=>"08", :description=>"Other mining and quarrying"},
  {:code=>"09", :description=>"Mining support service activities"}
]

> Isic.groups(division: "08")
[
  {:code=>"081", :description=>"Quarrying of stone, sand and clay"},
  {:code=>"089", :description=>"Mining and quarrying n.e.c."}
]

> Isic.classes(group: "089")
[
  {:code=>"0891", :description=>"Mining of chemical and fertilizer minerals"},
  {:code=>"0892", :description=>"Extraction of peat"},
  {:code=>"0893", :description=>"Extraction of salt"},
  {:code=>"0899", :description=>"Other mining and quarrying n.e.c."}
]

> Isic::Entity.new("0891").classify(translation: :es)
{
  :class=>{:code=>"0891", :description=>"Extracción de minerales para la fabricación de abonos y productos químicos"},
  :group=>{:code=>"089", :description=>"Explotación de minas y canteras n.c.p."},
  :division=>{:code=>"08", :description=>"Explotación de otras minas y canteras"},
  :section=>{:code=>"B", :description=>"Explotación de minas y canteras"}
}

> Isic.groups(division: "08", translation: :fr)
[
  {:code=>"081", :description=>"Extraction de pierres, de sables et d'argiles"},
  {:code=>"089", :description=>"Activités extractives, n.c.a."}
]