00414nam a2200145 a 450000500170000000800410001702000180005804100080007608200140008410000160009824500790011426400400019330000170023370000180025020260717092718.0260717s1993 ii 000 0 eng d a9788121908832 aeng04a628.501541 aDara, S. S.12aA Text Book of Enviromental Chemistry and Pollution Control /cDara, S. S. 1aNew Delhi :bS.Chand,cc1993, 2012. axiii, 521 p.1 aMishra, D. D.