Geen, G.K. and Douglas, R.P.A. <br/><br/>
The Law of Pilotage 

 - 2nd ed. 
 -  Lloyds Register of Shipping, London  1983 
 - xx, 177 
<br/><br/><label>ISBN: </label>0907432662, 
<br/><br/><label>Dewey Class. No.: </label>Column-19