CARTMELL.E <br/><br/>
Valency and Molecular Structure 

 - 4th ed 
 - London  The English Language Book Soc  iety       1977 
 - 341p. 
<br/><br/><label>ISBN: </label>0 408 70922 7 
<br/><br/><label>Dewey Class. No.: </label>541.224