Snell , Foster Dee . <br/><br/>
Colorimetric Methods of Analysis: Including Photometric Methods /  Textual Documents 
Foster Dee Snell & Cornelia T.Snell. 
 - 1st ed. / 
 - London :  D. Van Nostrand Co., Inc ,  C1959. 
 - 791p. :  ill ;  22cm . 
<br/><br/><label>Subjects--Index Terms: </label>Chemistry Colorimetric Methods-Analysis Photometric Methods-Analysis G-Chemistry 
<br/><br/><label>Dewey Class. No.: </label>545.8  / Sn 27 C