MCWEENY, Roy <br/><br/>
COULSON`S VALENCE 

 - New Delhi  Prentice-Hall of India Pvt. Ltd., New Delhi   1979 
<br/><br/><label>ISBN: </label>0 19 4423522 
<br/><br/><label>Dewey Class. No.: </label>541.224  / MCW/C.M