The minimum requirement of professional capacity in the case of captains, navigating and engineer officers in charge of watches on board merchant ships.  Fourth item, IV on the agenda. 

 - Geneva,  International labour office,  1929. 
 - 24 p.  21 cm. 
<br/><br/> At head of title: Questionnaire IV. International labour conference. Fifteenth session. 
<br/><br/><label>LCCN: </label>l  31000068  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ships--Manning.<br/>Maritime law.
<br/><br/><label>LC Class. No.: </label>VK221  / .I55 1929a