Official methods of analysis of AOAC International / 
[edited by] William Horwitz, George W. Latimer. 
 - 18th rev. ed. 
 - Gaithersburg, Md. :  Association of Official Analytical Chemists,  2007. 
 - v. :  ill. ;  28 cm. 
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<br/><br/><label>ISBN: </label>0935584781 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural chemistry--Technique.<br/>Chemistry, Analytic.<br/>Chemistry, Agricultural.