Cartmell, E. <br/><br/>
Valency and molecular structure / 
by E. Cartmell and G.W.A. Fowles.- 
 - 4th ed. 
 - London :  Butterworth,  c1977. 
 - 341 p :  ill. ;  24 cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0408709227 
<br/><br/><label>Source: </label>B-10194 
<br/><br/><label>Nat. Bib. No.: </label>GB77-11204 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Valence (Theoretical chemistry)
<br/><br/><label>LC Class. No.: </label>QD469  / .C37  1977