Madsen, O. Lehrmann,  1950- <br/><br/>
Object-oriented programming in the BETA programming laguage / 
Ole Lehrmann Madsen, Birger Moller-Pedersen, and Kristen Nygaard 
 - Wokingham, Eng. :  Addison-Wesley,  1993 
 - 357 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0201624303 
<br/><br/><label>LCCN: </label>93-1150 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Object-oriented programming (Computer science)<br/>BETA (Computer program language)