ACOS-4/AVP ADBS programming guide :DFC23E-4 

 - 2nd ed. 
 -  Tokyo:NEC  1987 
 - 286 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ADBS :ACOS operating system
<br/><br/><label>Dewey Class. No.: </label>519.68/12  / NS