000 00329nam a2200133Ia 4500
008 211209s2006 xx 000 0 und d
020 _a8122418481
041 _aeng
082 _a628 O06
100 _aSINGH Y K
245 _aENVIRONMENTAL SCIENCE
260 _aNEW DELHI
_bNEW AGE INTERNATIONAL LTD.
_c2006
300 _aVI + 309
999 _c58835
_d58835