Pdc prolog toolbox. version 3.20 [programa de computo] 

 - Copenhagen, Dk.:  Prolog Development Center,  1990 
 - 1 DISKETTE ; 5.25" 
 - Serie ;  at003-0084205 .
<br/><br/> Cib. 6918  Fact. 92, omicron 14548  Pdc Prolog Toolbox (manual) 
<br/><br/> Librerias de turbo prolog. 
<br/><br/><label>LC Class. No.: </label>PROG. COMP.