Instrumental methods of analysis / 
Hobert H. Willard ... [et al.]. 
 - 7th ed. 
 - Belmont, Calif. :  Wadsworth Pub.,  c1988. 
 - xxi, 895p. : ill. ; 24 cm. 
<br/><br/> Includes bibliographical references. Index : p. 878 - 895. 
<br/><br/><label>ISBN: </label>0534081428 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Instrumental analysis.