Schofield K Ed. <br/><br/>
Recent work on naturally occurring nitrogen heterocyclic compounds 

 -  1955 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>74953 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>E1:8z7, J5  CL