Katzan, Harry. <br/><br/>
APL user's guide. 

 - New York, NY. :  Van Nostrand Reinhold Co.,  1971. 
 - x, 126 p. :  ill.;  28 cm. 
 - Computer science series. .
<br/><br/>Includes bibliographical references : p. 112. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>APL (Computer program language)