000 00314nam a2200121Ia 4500
008 240831s9999||||xx |||||||||||||| ||und||
020 _a9788120352636
100 _aRag, R L
245 0 _aIntroduction to Sustainable Engineering
260 _aNew Delhi
_bPHI Learning Pvt Ltd
_c2016
300 _a180p.
942 _yBK
999 _c23055
_d23055