Madsen, Ole Lehrmann. <br/><br/>
Object-oriented programming in the BETA programming language / 
Ole Lehrmann Madsen, Birger Moller-Pedersen, Kristen Nygaard. 
 - Wokingham, England :  ddison-Wesley,  1993. 
 - xiv, 357 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0201624303 
<br/><br/><label>LCCN: </label>93001150  
<br/><br/><label>Subjects--Topical Terms: </label><br/>BETA (Computer program language).<br/>Object-oriented programming.