Willard, H H Instrumental Methods of Analysis Author :- ; Merritt, L L; Dean, J A / by Hobart H. Willard, Lynne L. Merritt, John A. Dean, Frank A. Settle, - 7th ed. - New Delhi: CBS Publishers & Distributors , 1996. - xxi,895p. ISBN: 8123909438 Dewey Class. No.: 621.374 / WIL/I