000 00457nam a2200145Ia 4500
008 150723s9999 xx 000 0 und d
020 _a3680
082 _a 628 KEE-P
100 _a Keerthinarayana, S; Daniel Yesudian, C
245 _a Principles of environmental science and engineering
260 _b Hi-Tech Publications, Chennai
260 _c2004
650 _a Sanitary and municipal engineering, Environmental protection engineering
942 _cBK
999 _c3443
_d3443