Heller, S R <br/><br/>
EPA/NIH mass spectral database  

 - Washington:   U. S. Department of Commerce,   1978 
<br/><br/> Vol. 1 (Molecular weights 30-186); ix, 988p.<br/>Vol. 2 (Molecular weights  186-273); ix, 989-1984p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>543.51