Excercises in the 21st edition of the Dewey Decimal Classification /

Eitemau Tebyg

• Dewey decimal classification 21st edition Guide /
  gan: Scott, Mona L.
  Cyhoeddwyd: (2004)
• Excercises in the 20th edition of the Dewey Decimal Classification /
  gan: Comaromi, John P.
  Cyhoeddwyd: (1990)
• Dewey decimal classification 21st edition A study manual and number building guide /
  gan: Scott, Mona L.
  Cyhoeddwyd: (2004)
• Excercises in the 21st edition of the dewey decimal classification
  gan: Satija, M.P
  Cyhoeddwyd: (1998)
• Introduction to the practice of Dewey Decimal Classification /
  gan: Satija, M. P.
  Cyhoeddwyd: (1987)