00404nam a22001457i 4500001001000000005001700010008004100027082001800068100001500086245004200101260004800143300001700191650003200208020001800240SXC02934420260819093841.0260101s2006    ii            000 0 eng d  a540 RAO-U222  aRao, C N R10aUnderstanding chemistry /cRao, C N R  abUniversities Press Ltd., Hyderabad,c2006  ap. ;c22 cm. 0aChemistry & allied sciences  a9780072555530