Ranganathan, S. (2006). Prolegomena to library classification (3rd ed.). Ess Ess Publicaions.
Dyfyniad Arddull ChicagoRanganathan, S.R. Prolegomena to Library Classification. 3rd ed. New Delhi: Ess Ess Publicaions, 2006.
Dyfyniad MLARanganathan, S.R. Prolegomena to Library Classification. 3rd ed. Ess Ess Publicaions, 2006.
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