Weinhold, Frank <br/><br/>
Valency and bonding :  a natural bond orbital donor-acceptor perspective / 
Frank Weinhold and Clark R. Landis 
 - Cambridge, UK :  Cambridge University Press,  2005 
 - 749 p. :  ill. ;  26 cm 
<br/><br/><label>ISBN: </label>0521831288 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Valence (Theoretical chemistry)<br/>Chemical bonds<br/>Molecular structure