IDL reference guide   objects and appendices 

 - Illinois  Research Systems  1999 
 - x+p.1573-2250+Index1-53  appndx; index; refs 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Idl
<br/><br/><label>Universal Decimal Class. No.: </label>519.67IDL  / IDL