Excercises in the 20th edition of the Dewey Decimal Classification /

Eitemau Tebyg

• Exercises in the 20th edition of the Dewey decimal classification /
  gan: Comaromi, John P.
  Cyhoeddwyd: (1990)
• Exercises in the 20th edition of the Dewey decimal classification
  gan: Comaromi, John P, et al.
  Cyhoeddwyd: (1990)
• Excercises in the 21st edition of the Dewey Decimal Classification /
  gan: Satija, M. P.
  Cyhoeddwyd: (1990)
• Dewey decimal classification 19th.Edition.
  gan: Dewey, Melvil
  Cyhoeddwyd: (1979)
• Classifying with Dewey Decimal Classification (Editions 19 and 20) /
  gan: Dhyani, Pushpa
  Cyhoeddwyd: (2002)