000 00331nam a2200133Ia 4500
008 250104s9999 xx 000 0 und d
020 _a978-81-8492-461-9
082 _a628
_bPAG
100 _aPagnis R.
245 0 _aEnvironmental studies
260 _aNew delhi :
_b Tech-Max
_c2016.
365 _a145
650 _aEngineering,
999 _c231888
_d231888