Simpson A. <br/><br/>
Understanding D Base IV 

 - New Delhi  B.P.B. Publications  1976 
<br/><br/><label>ISBN: </label>0000016295 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Base  D  IV  Understanding<br/>D Base Languages III, IV etc
<br/><br/><label>Dewey Class. No.: </label>001.642466Dbase 6