Productive efficiency and its convergence across STUs 
by Sanjay Kumar Singh 
 - Pune  Central Institute of Road Transport  2001 
 - 27p. 
 - Working paper; no. 1 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transportation
<br/><br/><label>Dewey Class. No.: </label>W S64