Willard, Hobart H., etal. <br/><br/>
Instrumental methods of analysis   
by Hobart H. Willard, etal. 
 - 7th ed. 
 - New Delhi  CBS Publishers & Distributors  1986 
 - xxi, 895p. 
<br/><br/><label>Dewey Class. No.: </label>543.08  / N86;3