Lipsey, Richard G., <br/><br/>
An introduction to positive economics / 
[by] Richard G. Lipsey. 
 - 4th ed. 
 - London :  Weidenfeld and Nicolson,  1975. 
 - xxii, 810 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0297775979 : 0297775987 (pbk.) 
<br/><br/><label>Nat. Bib. No.: </label>GB79-28478 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.
<br/><br/><label>Dewey Class. No.: </label>330.1  / LII 1975