Caldwell, A. <br/><br/>
Screw tug design 
/ A. Caldwell 
 - [Londres] :  Hutchinson's Scientific and Technical publications  , [s.n.] 
 - 154 p.   ; 24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ingeniería naval<br/>Enxeñaría naval<br/>Construcción naval<br/>Construción naval