Snell, Foster Dee. <br/><br/>
Colormetric methods of analysis :  including some turbidimetric and nephelometric methods / 
by Foster Dee Snell and Cornelia T. Snell. 
 - 3rd ed. 
 - Princeton, New Jersey :  Nostrand,  c1948-1954. 
 - 4 v. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colormetric analysis.