Daraniya anagathayak sdaha sahayogi kriyakarithwayak sadaha parashiksha darshanayak : Educating for a substatial future  A transdisciplinary vision for concerted action 

 - Sri Lanka  UNESCO  1999 
 - 69p. 
<br/><br/><label>Universal Decimal Class. No.: </label>37  / D16