An introduction to universal decimal classification/
Sehgal R. L.
An introduction to universal decimal classification/ R. L. Sehgal. - New Delhi : Ess Ess ; 2004. - 266. p. 23cm.
Includes index.
8170001668 (hbk.)
Classification, Universal decimal.
An introduction to universal decimal classification/ R. L. Sehgal. - New Delhi : Ess Ess ; 2004. - 266. p. 23cm.
Includes index.
8170001668 (hbk.)
Classification, Universal decimal.