Cartmell, E. <br/><br/>
Valency and molecular structure / 
by E. Cartmell and G.W.A. Fowles 
 - 3rd ed. 
 - London :  Butterworths,  1966 
 - 315 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0408690003 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Valence (Theoretical chemistry).<br/>Molecular structure.