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Dyfyniad Arddull ChicagoRavichandra Rao, I.R. Quantitative Methods for Library and Information Science. New Delhi: Wiley eastern, 1983.
Dyfyniad MLARavichandra Rao, I.R. Quantitative Methods for Library and Information Science. Wiley eastern, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.