Thomas, J. J., <br/><br/>
Informal economic activity / 
J. J. Thomas. 
 - New York :  Harvester . Wheatsheaf,  1992 
 - xii, 371 pages :  24 cm 
<br/><br/> Notes Registration no : 25284 
<br/><br/><label>ISBN: </label>0745011683 
<br/><br/><label>Subjects--Personal Names: </label><br/>Economics.