000 00299nam a2200121Ia 4500
040 _cCUS
082 _a025.432
_bSEH/I
100 _aSehgal, R. L.
_928374
245 3 _aAn introduction to UDC/
_cR. L. Sehgal
260 _aNew Delhi:
_bEss Ess Publication,
_c2002.
300 _a266 p.
942 _cWB16
999 _c145861
_d145861