IDL User's Guide  Interactive Data Language Version 4 
Research Systems Inc 
 - [March 1995 Edition] 
 - Colorado, USA  Research Systems Inc.  1995 
 - viii, 400p.  ill.  28 cm 
 - Version 4 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer Softwares--IDL