Theory and problems of chemistry for class IX with solved problems /
Katyal, M.
Theory and problems of chemistry for class IX with solved problems / M. Katyal, R.K. Trikha. - New Delhi : Tatal McGraw-Hill, 1985. - 191 p : ill. ; 23 cm.
Chemistry--Problems, exercises, etc.
Chemistry--Study and teaching.
540.2
Theory and problems of chemistry for class IX with solved problems / M. Katyal, R.K. Trikha. - New Delhi : Tatal McGraw-Hill, 1985. - 191 p : ill. ; 23 cm.
Chemistry--Problems, exercises, etc.
Chemistry--Study and teaching.
540.2