S.R. Ranganathan. Depth classification: Paper photocopy of annuals of library science vol:3 (1956) pages 33-72. Indian national scientific documentation centre.
Chicago Edition CitationS.R. Ranganathan. Depth Classification: Paper Photocopy of Annuals of Library Science Vol:3 (1956) Pages 33-72. New Delhi: Indian national scientific documentation centre.
Deismireacht MLAS.R. Ranganathan. Depth Classification: Paper Photocopy of Annuals of Library Science Vol:3 (1956) Pages 33-72. Indian national scientific documentation centre.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.