Official methods of analysis of the Association of Official Analytical Chemists/ 
editors William Horwitz ... (et al.) 
 - Twelve edition. 
 - Washington, D.C.:  Association of Official Analytical Chemists,  1975. 
 - 1094 pages :   illustrations;   27 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemistry, Analytic--Qualitative.<br/>Chemistry, Analytic--Quantitative.<br/>Chemistry, Analytic.