Cartmell, E.. <br/><br/>
Valency and Molecular Structure /  Textual Documents 
E. Cartmell & G.W.A. Fowles. 
 - 4th ed. / 
 - England :  ELBS, English Language Book Society ,  1977. 
 - 341p. :  ill. ;  23cm . 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>0 408 70922 7 
<br/><br/><label>Subjects--Index Terms: </label>Chemistry Physical Chemistry Molecular Structure Valency PG-Chemistry 
<br/><br/><label>Dewey Class. No.: </label>541.39  / C 249 V