00334nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001700084245004300101260003400144300000800178650001400186221030s9999    xx            000 0 und d  a8171335810  aEnglish  a105.23bSha  aP. D. Sharma 0aEcology & Environmentcby P. D. Sharma  bCharotar PubaNew Delhic2002  a660  aChemistry