Watson, Donald Stevenson <br/><br/>
Price History and its uses 
/ by Donald Stevenson 
 - New Delhi   Khosla publishing house  1986 
 - xvi, 534p. 
<br/><br/><label>ISBN: </label>039300568 
<br/><br/><label>Dewey Class. No.: </label>338.521  / WAT/P