000 00339nam a2200133Ia 4500
008 230118s9999||||xx |||||||||||||| ||und||
020 _a81-219-0883-3
082 _a540.15
082 _bDAR/E
100 _aS.S
_bDARA
245 0 _aENVIRONMENTAL CHEMISTRY AND POLLUTION CONTROL
260 _aRAM NAGAR,NEW DELHI
260 _bS.CHAND & COMPANY
999 _c9801
_d9801