APL 80 :  International Conference on APL, June 24-26, 1980 / 
edited by Gijsbert van der Linden 
 - Amsterdam :  North-Holland,  1980 
 - 319 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>APL (Computer program language)--Congresses
<br/><br/><label>LC Class. No.: </label>QA76.73 A27  / I59 1980