00328nam a2200133Ia 4500008004100000041001200041082001600053100001700069245004300086260002500129300000800154650001400162700001800176221030s9999    xx            000 0 und d  aEnglish  a105.23bSaw  aC. N. Sawyer 0aChemistry for Enviormental Engineering  bTMHaNew Delhic1978  a532  aChemistry  aP. L. Mccarty