000 00286nam a2200121Ia 4500
008 220201s9999 xx 000 0 eng d
082 _bGUR
100 _aGuru, J. N. & Dua, S. K.
245 0 _aEngineering chemistry
260 _bSaran Prakashan Mandir
300 _a258
942 _2ddc
999 _c19417
_d19417