000 00308nam a2200145Ia 4500
008 190201s9999 xx 000 0 und d
082 _a631
082 _b7 SHA
100 _aSharma S K
245 0 _aPrinciples And Practice
260 _aNew Delhi
260 _bS Chand
260 _c1984
300 _a603
999 _c28186
_d28186