Welch, Patrick J. <br/><br/>
Economics :  theory and practice / 
Patrick J. Welch, Gerry F. Welch. 
 - 7th  ed. 
 - New Delhi :  J. Wiley,  2004. 
 - xiv, 544  p. 
<br/><br/><label>ISBN: </label>8126512621 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.