00449cam a2200157   4500008004100000020002200041100001700063245007200080260003400152300001900186500002000205650003900225003000100264005001700265040000900282                                          a8170001668 (hbk.)1 aSehgal R. L.14aAn introduction to universal decimal classification/cR. L. Sehgal.  aNew Delhi :bEss Ess ;c2004.  a266. p.c23cm.  aIncludes index. 0aClassification, Universal decimal.20230123134254.0  cNUST