Ryan, W. J. L. <br/><br/>
Price theory / 
W. J. L. Ryan. 
 - London :  Macmillan,  1977 
 - xvi, 399 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0333179129 
<br/><br/><label>LCCN: </label>77377873  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microeconomics.