rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Principles of a resource/reserve classification for minerals
  name:
    name part: United States
    name part: Bureau of Mines.
  name:
    name part: Geological Survey (U.S.)
  type of resource: text
  origin info:
    place:
      place term: vau
    date issued: 1980
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: iii, 5 pages : 2 illustrations ; 26 cm.
  note: by the U.S. Bureau of Mines and the U.S. Geological Survey.
  note: "A revision of the classification system published as U.S. Geological Survey Bulletin 1450-A."
  subject:
    geographic code: n-us---
  subject:
    topic: Mines and mineral resources
    geographic: United States
    topic: Classification
  classification: QE75 .C5 no. 831
  classification: 557.3 s 553/.01/2
  classification: I 19.4/2:831
  related item:
    title info:
      title: Geological Survey circular ; 831
  identifier: gp 81002590
  identifier: 80607901
  record info:
    record content source: DLC
    record creation date: 800520
    record change date: 20151018115627.0
    record identifier: in00000821571