Eichelberger, James W. <br/><br/>
Analytical quality assurance for trace organics analysis by gas chromatography mass spectrometry / 
JJames W. Eichelberger, William M. Middleton and William L. Budde 
 - Washington, D.C. :  United States Government Printing Office,  1975 
 - iii, 13 p. :  ill. ;  28 cm. 
 - Environmental monitoring series .
<br/><br/> EPA-600/4-75-007 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gas chromatography--Methodology<br/>Mass spectrometry
<br/><br/><label>Dewey Class. No.: </label>543.0896