Urch, D. S. <br/><br/>
Orbitals and symmetry/ 
by D. S. Urch. 
 - Harmondsworth :  Penguin,  1970. 
 - 256 p. :  ill. ;  21 cm. 
 - Penguin library of physical sciences. Chemistry. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0140800980 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Molecular orbitals.<br/>Symmetry (Physics)<br/>