Wimalaratne, K. D. G. <br/><br/>
Preservation challenge of the 1990s 
K.D.G.Wimalaratne 
 - Colombo  Sri Lankanational library service board  1990 
 - 183 - 185 p.  pbk. ;  24 cm 
<br/><br/><label>Dewey Class. No.: </label>027.5  / SRI