Ahmed,E,R.et al. <br/><br/>
Crystallographic computing techniques: 

 - Copenhagen:  Munksgaard,  1976. 
 - 502p.  ill;  24.5. 
<br/><br/><label>ISBN: </label>9788716021328 
<br/><br/><label>Dewey Class. No.: </label>548.81AHM