Coulson, C. A.(Charles Alfred), 1910-1974. <br/><br/>
The shape and structure of molecules/ 
C. A. Coulson. 
 - Oxford:  Clarendon Press,  1973. 
 - 85 p. :  ill. ;  22 cm. 
<br/><br/>p.81-82. 
<br/><br/><label>ISBN: </label>0198554214 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Molecules.<br/>Chemical bonds.<br/>Valence (Theoretical chemistry)