KO KNOWLEDGE ORGANIZATION / Comaromi, J.P., Satija, M.P.: Exercises in the 20th edition of the Dewey Decimal Classification. (J. Friis-Hansen)
KO KNOWLEDGE ORGANIZATION / Comaromi, J.P., Satija, M.P.: Exercises in the 20th edition of the Dewey Decimal Classification. (J. Friis-Hansen)
