Trace analysis by mass spectometry / 
edited by Arthur J. Ahearn 
 - New York :  Academic Press,  1972 
 - 460 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0120446502 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trace elements--Analysis<br/>Mass spectrometry