PERMENENT INTERNATIONAL ASSOCIATION OF NAVIGATION OF CONGRES <br/><br/>
TWENTY FIFTY INTERNATIONAL NAVIGATION CONGRESS:INLAND MARITIME WATERWAYS AND POR 

 - 5 
 -  P.I.A.N.C6CEDIBURGH SCOTLAND  1981 
<br/><br/><label>Dewey Class. No.: </label>627.15061 P26