Dhawan,, S.N. . Pradeep`s Objective Chemistry / Textual Documents S.N.Dhawan,S.C.Kheterpal & J.R.Mehta. - 22nd ed / - Jalandhar : Pradeep Publications , 2008. - 2466p ; 24cm. Subjects--Index Terms: Chemistry G- Chemistry Dewey Class. No.: 540 / Dh 535 Ch