Lipsey, Richard G. <br/><br/>
An introduction to positive economics / 
Richard G. Lipsey 
 - 3rd ed. 
 - London :  Weidenfeld and Nicolson,  1971 
 - xx, 740 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical refernces and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics