United Nation <br/><br/>
The Potential for Development of Offshore Construction Sand and Gravel in East Asia 

 - New york,  United Nation,  1993, 
 - v, 68p.  28cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Sand and Gravel<br/>East Asia
<br/><br/><label>Dewey Class. No.: </label>551.46  / POT