United Nations Conference of Plenipotentiaries on supplementary conv ention on the abolition of slavery, the slave trade, and institutions a nd practices similar to slavery , held at Geneva, Switzerland from 12 A ugust to 4 September 1956. 

 - New York :    United Nations,    1956. 
 - 36 p. ;    28 cm. 
<br/><br/>  "United Nations publication. Sales no. 1975.XIV.2 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Shipping conferences -- Law and legislation.