Speakman, J. Clare <br/><br/>
An introduction to the electronic theory of valency. 

 - [3rd ed.] 
 - London  E. Arnold  [c1956] 
 - 180 p.  ill.  19 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Valence (Theoretical chemistry)<br/>Electrochemistry