Cartmell , E <br/><br/>
Valency and molecular structure 

 - 4ed. 
 - London:  Butterworth and Co publishers Ltd,  1977. 
 - xii, 341p. 
<br/><br/><label>ISBN: </label>0408709227 
<br/><br/><label>Subjects--Index Terms: </label>Valency  Molecular structure 
<br/><br/><label>Dewey Class. No.: </label>541  / CAR