Burkert, Ulrich <br/><br/>
Molecular mechanics 
by Ulrich Burkert and Norman L. Allinger 
 - Washington  American Chemical Society  c1982 
 - xi,339p:front.; 22cm.- 
 - ACS monographs; no.117 .
<br/><br/><label>Dewey Class. No.: </label>541.22  / BUR