Survey of lights and signalling equipment :  instructions for the guidance of surveyors. 

 - 2nd ed. 
 - London :  H.M.S.O.,  1982. 
 - vi, 56 p. :  ill. ;  29 cm. +  pbk. 
<br/><br/> At head of title: Department of Trade. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0115134948  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ships' lights.<br/>Signals and signaling
<br/><br/><label>Dewey Class. No.: </label>623.865