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