Speakman, J. C. <br/><br/>
An Introduction to the Modern Theory of Valency 

 - 2nd ed. 
 - London  Arnold  1949 
 - 159 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Theoretical Chemistry
<br/><br/><label>Dewey Class. No.: </label>541.39  / S7411