000 00338nam a2200157Ia 4500
008 190201s9999 xx 000 0 und d
020 _a8122411290
082 _a628
082 _bRAM
100 _aRamanan Parvathy
245 0 _aEngineering Environment
260 _aNew Delhi
260 _bN.A.I.
260 _c1998
300 _a157
999 _c47190
_d47190