00456nam a22001697a 450000500170000001000140001702000250003103500140005603700130007008200080008310000180009124500410010925000110015026000420016127000620020330000210026520100806154752.0  aENG-98737  a9788190630108c46.00  aENG-82269  bDBAD/PUB  a660  aElangovan, K.  aApplied chemistry /bby K. Elangovan  a3rd ed  aKaraikudibNational Pathippahamc1999  a19, Church Fourth Street, T. T. Nagar,bKaraikudie630001  a90p.c21cm (pbk)